A Level Economics H3 Practice Paper 1

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A-Level Economics H3 Quiz - Microeconomics

Name: ___________________________
Class: ___________________________
Date: ___________________________
Score: ______ / 40
Duration: 70 minutes
Total Marks: 40

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Instructions to candidates:

• Answer all questions in the spaces provided.
• Read each question carefully before responding.
• Where evaluation or discussion is required, develop your argument with clear reasoning, relevant economic concepts, and reference to the information provided.
• The number of marks for each question is shown in brackets [ ].
• You are advised to plan your time according to the marks allocated.

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Section A: Short-Answer and Structured Questions (Questions 1–5)

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Question 1 [6 marks]

Consumers in Country X were offered a choice between two electricity tariffs. When the green tariff was set as the default option, 78% of consumers remained on it. When consumers were required to actively choose a tariff with no default, only 41% selected the green tariff.

(a) Identify the behavioural bias exhibited by consumers. [2]

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(b) Explain how this bias leads to a departure from the conventional assumption that consumers make rational decisions by weighing marginal costs and marginal benefits. [4]

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Question 2 [8 marks]

Firm A and Firm B are the only two producers of a homogeneous good. Each firm can choose to set a high price or a low price. If both set high prices, each earns $80 million. If both set low prices, each earns$40 million. If one sets a low price while the other sets a high price, the low-price firm earns $100 million and the high-price firm earns$20 million.

(a) Construct the payoff matrix. [2]

	Firm B: High Price	Firm B: Low Price
Firm A: High Price
Firm A: Low Price

(b) Does either firm have a dominant strategy? Explain your answer. [3]

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(c) Identify the Nash equilibrium (in pure strategies). Explain why this outcome may not be the best joint outcome for the firms. [3]

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Question 3 [8 marks]

In the market for health insurance, policyholders have more information about their own health risks and lifestyle habits than the insurance company. After purchasing insurance, some policyholders engage in riskier behaviour because they know the insurer will cover the costs.

(a) Explain the problem of moral hazard in this insurance market. [3]

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(b) Illustrate how moral hazard leads to market failure in this context. You may use a diagram or a written explanation. [2]

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(c) Evaluate the effectiveness of co-payment (where the policyholder pays a fraction of each claim) in addressing moral hazard. [3]

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Question 4 [8 marks]

A government is considering whether to introduce tradable pollution permits to reduce carbon emissions from firms. Under the scheme, each firm receives a permit allowing it to emit a fixed quantity of carbon. Firms that reduce emissions below their permitted level can sell surplus permits to other firms.

(a) Explain how clearly defined property rights, as described by the Coase Theorem, can help address the externality problem of carbon emissions. [3]

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(b) Evaluate the effectiveness of tradable permits as a policy measure compared with a direct carbon tax. [5]

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Question 5 [10 marks]

Read the following scenario:

Country Y has experienced rapid economic growth over the past two decades, but the benefits of growth have been unevenly distributed. The top 10% of income earners now account for 45% of national income, while the bottom 30% account for only 8%. The government is debating whether to prioritise policies that promote higher productivity and value-added industries, or redistributive policies such as progressive taxation and social transfers.

(a) Explain the difference between inclusive economic growth and inequitable growth, using the data above to illustrate your answer. [4]

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(b) Evaluate the role of policies aimed at gaining dynamic comparative advantage through rapid productivity growth in promoting inclusive economic growth. [6]

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Section B: Data Response (Question 6)

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Question 6 [10 marks]

Read the following extract and data, and answer the questions that follow.

Extract: Behavioural Interventions in Retirement Savings

Many countries face the challenge of insufficient retirement savings among their populations. Traditional economic theory assumes that individuals rationally plan their consumption over their lifetime, saving during working years and drawing down savings in retirement. However, behavioural economists have observed that many individuals save far less than the rational lifecycle model predicts.

In Country Z, the government introduced an automatic enrolment scheme for workplace retirement plans in 2015. Under this scheme, employees were automatically enrolled in a retirement savings plan with a default contribution rate of 6% of salary, but could opt out at any time. The results after three years are shown in the table below.

Image pending generation: table for Q6.

(a) With reference to the data, explain which behavioural bias the automatic enrolment scheme is designed to address. [3]

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(b) Using the data, evaluate the effectiveness of the automatic enrolment scheme in increasing retirement savings. In your answer, consider both the strengths and limitations of the evidence presented. [4]

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(c) Discuss one additional policy measure the government of Country Z could introduce to further improve retirement savings outcomes, and evaluate its likely effectiveness. [3]

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A-Level Economics H3 Quiz - Microeconomics: Answer Key

Total Marks: 40

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Section A: Short-Answer and Structured Questions

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Question 1 [6 marks]

(a) Identify the behavioural bias exhibited by consumers. [2]

Answer: The bias exhibited is status quo bias (1 mark) — a preference for the current state of affairs, where consumers tend to stick with the default option rather than actively choosing an alternative, even when the alternative may offer greater net benefit (1 mark).

Marking note: Award 1 mark for correct identification of "status quo bias" by name. Award the second mark for a brief definition or description that links the concept to the scenario (i.e., consumers disproportionately choosing the default). Do not award the second mark for a generic definition with no reference to the scenario context.

(b) Explain how this bias leads to a departure from the conventional assumption that consumers make rational decisions by weighing marginal costs and marginal benefits. [4]

Answer:

Under conventional rational decision-making, consumers would evaluate the marginal costs and marginal benefits of each tariff and select the one that maximises their net benefit (1 mark). Status quo bias means consumers disproportionately favour the default option regardless of whether it truly offers the highest net benefit, because switching requires cognitive effort and involves uncertainty about the alternative (1 mark). This results in a systematic departure from utility maximisation, as the decision is influenced by the framing of the choice rather than by an objective assessment of costs and benefits (1 mark). In this case, the 78% vs 41% gap suggests that many consumers who would have benefited from the green tariff failed to switch when required to make an active choice, indicating that their decision was driven by inertia rather than a rational evaluation of costs and benefits (1 mark).

Marking descriptors:

• 1 mark: Correct description of rational MC=MB decision-making.
• 1 mark: Explanation of how status quo bias departs from this (cognitive effort, inertia, uncertainty).
• 1 mark: Clear link to the scenario data (78% vs 41%).
• 1 mark: Coherent chain of argument concluding that the departure from rationality is systematic.

Common mistake: Students may confuse status quo bias with the endowment effect (which relates to ownership) or the sunk cost fallacy (which relates to irrecoverable past costs). The scenario clearly describes a default-option effect, which is status quo bias.

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Question 2 [8 marks]

(a) Construct the payoff matrix. [2]

Answer:

	Firm B: High Price	Firm B: Low Price
Firm A: High Price	(80, 80)	(20, 100)
Firm A: Low Price	(100, 20)	(40, 40)

Marking note: Award 2 marks if all four payoff pairs are correctly placed in the cells. Award 1 mark if 2–3 cells are correct. Award 0 marks if fewer than 2 cells are correct or if the matrix structure is fundamentally wrong.

(b) Does either firm have a dominant strategy? Explain your answer. [3]

Answer:

Yes. For Firm A: if B chooses High, A earns 100 (Low) > 80 (High); if B chooses Low, A earns 40 (Low) > 20 (High). So Low is a dominant strategy for Firm A (1 mark). By symmetry, if A chooses High, B earns 100 (Low) > 80 (High); if A chooses Low, B earns 40 (Low) > 20 (High). So Low is also a dominant strategy for Firm B (1 mark). Each firm earns more by choosing Low regardless of the other firm's choice — the Low strategy strictly dominates the High strategy for both firms (1 mark).

Marking note: Award 1 mark for each correct identification of the dominant strategy (one for each firm). Award 1 mark for the explanation referencing the payoff comparison. Students must show the comparison, not merely assert the result.

(c) Identify the Nash equilibrium (in pure strategies). Explain why this outcome may not be the best joint outcome for the firms. [3]

Answer:

The Nash equilibrium is (Low Price, Low Price) with payoffs (40, 40) (1 mark). This is a Nash equilibrium because neither firm can unilaterally improve its payoff by deviating — if either firm switches to High while the other stays at Low, it earns only 20 instead of 40 (1 mark). However, this outcome is jointly suboptimal because both firms would earn 80 each if they both chose High Price — the cooperative outcome (High, High) with payoffs (80, 80) Pareto-dominates the Nash equilibrium. This illustrates the prisoner's dilemma: individual rationality (choosing the dominant strategy) leads to a collectively worse outcome (1 mark).

Marking note: Award 1 mark for correct identification of the Nash equilibrium. Award 1 mark for the best-response reasoning (explaining why neither firm wants to deviate). Award 1 mark for the comparison with the jointly optimal outcome and the prisoner's dilemma insight.

Common mistake: Students may confuse Nash equilibrium with the socially optimal or jointly optimal outcome. Emphasise that Nash equilibrium is about unilateral deviation incentives, not joint optimality.

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Question 3 [8 marks]

(a) Explain the problem of moral hazard in this insurance market. [3]

Answer:

Moral hazard occurs when one party (the policyholder) changes their behaviour after entering into a contract because the other party (the insurer) bears the cost of that behaviour (1 mark). In this case, after purchasing health insurance, policyholders have less incentive to maintain a healthy lifestyle or avoid risky behaviour because the insurer will cover the resulting medical costs (1 mark). This leads to higher-than-expected claims for the insurer, which raises premiums for all policyholders and may cause the market to function inefficiently or even unravel (1 mark).

Marking descriptors:

• 1 mark: Definition of moral hazard (post-contractual behaviour change due to risk transfer).
• 1 mark: Application to the health insurance context (riskier behaviour after insurance).
• 1 mark: Consequence for the market (higher claims, higher premiums, inefficiency).

(b) Illustrate how moral hazard leads to market failure in this context. [2]

Answer (written explanation):

Moral hazard leads to market failure because the insured individual does not bear the full cost of their risky behaviour. The private marginal cost of engaging in risky behaviour is lower than the social marginal cost (1 mark). This results in over-consumption of risky activities from society's perspective — the quantity of risky behaviour exceeds the socially optimal level, creating a deadweight loss. The insurance market fails to allocate resources efficiently because the price signal (the insurance premium) does not reflect the true cost of the insured's behaviour (1 mark).

Alternative answer (diagrammatic):

A demand-supply diagram for healthcare services can illustrate this. The demand curve with insurance (D_insured) lies above the demand curve without insurance (D_uninsured), reflecting the increased quantity of healthcare demanded at each price due to moral hazard. The divergence between the social marginal cost (SMC) and the private marginal cost (PMC) creates a deadweight loss triangle between the socially optimal quantity and the actual quantity consumed with insurance.

Marking note: Award 2 marks for a clear explanation of the divergence between private and social costs with a link to inefficiency. Award 1 mark if the explanation is partially correct but lacks the market failure conclusion.

(c) Evaluate the effectiveness of co-payment in addressing moral hazard. [3]

Answer:

Co-payment requires the policyholder to pay a fraction of each claim, thereby restoring some of the financial incentive to avoid unnecessary risk or excessive healthcare usage (1 mark). This reduces moral hazard by aligning the policyholder's private marginal cost more closely with the social marginal cost, leading to a more efficient level of healthcare consumption (1 mark). However, co-payment has limitations: it may discourage policyholders from seeking genuinely necessary medical care (not just excessive care), which could worsen health outcomes and lead to higher costs in the long run. Additionally, the effectiveness of co-payment depends on the size of the co-payment — too small and it has little effect; too large and it defeats the purpose of insurance by exposing the policyholder to significant financial risk. A well-designed policy would combine co-payment with exemptions for essential or preventive care (1 mark).

Marking descriptors:

• 1 mark: Explanation of how co-payment works to reduce moral hazard.
• 1 mark: Analysis of the mechanism (restoring incentives, aligning private and social costs).
• 1 mark: Evaluation of limitations or conditions for effectiveness.

Common mistake: Students may assert that co-payment is always effective without discussing its limitations or the risk of deterring necessary care.

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Question 4 [8 marks]

(a) Explain how clearly defined property rights, as described by the Coase Theorem, can help address the externality problem of carbon emissions. [3]

Answer:

The Coase Theorem states that if property rights are clearly defined and transaction costs are zero, private bargaining between affected parties will lead to an efficient outcome regardless of who initially holds the property rights (1 mark). In the context of carbon emissions, if the right to emit (or the right to a clean environment) is clearly assigned, firms and affected parties can negotiate to reach the socially optimal level of emissions (1 mark). For example, if firms have the right to emit, affected communities could pay firms to reduce emissions; if communities have the right to clean air, firms could purchase the right to emit up to the level where marginal abatement cost equals marginal damage. The key insight is that clearly defined property rights internalise the externality by creating a market for emissions, leading to the efficient quantity without direct government intervention (1 mark).

Marking descriptors:

• 1 mark: Correct statement of the Coase Theorem (clear property rights + zero transaction costs → efficient outcome).
• 1 mark: Application to the carbon emissions context.
• 1 mark: Explanation of the mechanism (bargaining internalises the externality).

Note: Students are not required to evaluate the Coase Theorem's limitations in this part, but may mention transaction costs as a caveat for additional context.

(b) Evaluate the effectiveness of tradable permits as a policy measure compared with a direct carbon tax. [5]

Answer:

Tradable permits set a cap on total emissions and allow firms to buy and sell permits. Firms with low abatement costs will reduce emissions and sell permits to firms with high abatement costs, achieving the emissions target at minimum total cost (1 mark). The key advantage is certainty over the quantity of emissions — the cap ensures the environmental target is met (1 mark).

A carbon tax, by contrast, sets a price on each unit of emissions, giving firms an incentive to reduce emissions up to the point where marginal abatement cost equals the tax rate. The advantage is certainty over the price (and therefore the marginal cost of abatement), but the total quantity of emissions is uncertain (1 mark).

Comparison and evaluation:

• Tradable permits are more effective when the environmental target is clear and the priority is achieving a specific emissions reduction (e.g., meeting an international commitment). The market price for permits adjusts automatically to reflect scarcity (1 mark).
• A carbon tax is more effective when the marginal damage curve is relatively flat and the priority is cost certainty for firms. It also generates government revenue that can be used for redistribution or investment in green technology.
• Tradable permits require a well-functioning market and monitoring system; if permits are overallocated (as in some early emissions trading schemes), the price collapses and the scheme fails to reduce emissions. A carbon tax avoids this risk but may face political resistance.
• In practice, a combination of both — a cap-and-trade system with a price floor and ceiling — may be the most robust approach (1 mark).

Marking descriptors:

• 1 mark: Clear explanation of how tradable permits work.
• 1 mark: Clear explanation of how a carbon tax works.
• 1 mark: Identification of a key difference (quantity certainty vs price certainty).
• 1 mark: Evaluation of relative effectiveness in a specific context.
• 1 mark: Synthesis or nuanced conclusion (e.g., hybrid approach, practical limitations).

Common mistake: Students may describe one policy without comparing it to the other, or may assert that one is universally superior without context-dependent evaluation.

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Question 5 [10 marks]

(a) Explain the difference between inclusive economic growth and inequitable growth, using the data above to illustrate your answer. [4]

Answer:

Inclusive economic growth refers to growth that provides broad-based benefits across all segments of society, with gains distributed relatively equitably and opportunities accessible to all (1 mark). Inequitable growth refers to growth where the benefits are concentrated among a small segment of the population, leaving large groups with little or no improvement in living standards (1 mark).

Using the data: In Country Y, the top 10% of income earners account for 45% of national income while the bottom 30% account for only 8%. This indicates that the gains from rapid economic growth have been disproportionately captured by the highest earners (1 mark). The Gini coefficient would be high, and the ratio of the top 10% share to the bottom 30% share (45/8 ≈ 5.6) illustrates the extent of inequality. This pattern suggests that growth has not been inclusive — the bottom 30% have not benefited proportionally from the two decades of growth (1 mark).

Marking descriptors:

• 1 mark: Definition of inclusive growth.
• 1 mark: Definition of inequitable growth.
• 1 mark: Use of specific data from the scenario (45% vs 8%).
• 1 mark: Interpretation of what the data implies about the nature of growth.

(b) Evaluate the role of policies aimed at gaining dynamic comparative advantage through rapid productivity growth in promoting inclusive economic growth. [6]

Answer:

Policies aimed at gaining dynamic comparative advantage focus on building new areas of competitive strength through investment in skills, technology, and higher value-added industries, rather than relying on existing static comparative advantages such as low labour costs (1 mark). Rapid productivity growth and higher value-added per unit of labour can increase incomes and living standards (1 mark).

Arguments for inclusiveness:

• Higher value-added industries tend to pay higher wages, which can raise incomes across the workforce if workers are equipped with the necessary skills (1 mark).
• Productivity-driven growth can generate government revenue that can be used for redistributive policies, education, and social safety nets, supporting inclusive outcomes (1 mark).

Limitations and evaluation:

• However, the gains from dynamic comparative advantage may not be inclusive if the benefits accrue primarily to skilled workers and capital owners, potentially widening inequality. Workers in declining or low-productivity sectors may be left behind unless there are complementary policies for retraining and social protection (1 mark).
• Additionally, the transition to higher value-added industries may be slow, and the benefits may take years to materialise. In the short run, such policies may exacerbate inequality if they favour already-advanced sectors or regions. Therefore, policies for dynamic comparative advantage are necessary but not sufficient for inclusive growth — they must be accompanied by redistributive policies, investment in human capital, and social safety nets to ensure that the benefits of growth are widely shared (1 mark).

Marking descriptors:

• 1 mark: Explanation of dynamic comparative advantage and its link to productivity growth.
• 1 mark: Analysis of how productivity growth can support inclusive outcomes.
• 1 mark: Identification of a specific mechanism (higher wages, government revenue).
• 1 mark: Recognition of limitations (skills bias, uneven distribution of gains).
• 1 mark: Evaluation of the conditions under which such policies promote inclusiveness.
• 1 mark: Overall judgement (necessary but not sufficient; complementary policies needed).

Common mistake: Students may argue that productivity growth automatically leads to inclusive growth without considering distributional effects or the need for complementary policies.

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Section B: Data Response

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Question 6 [10 marks]

(a) With reference to the data, explain which behavioural bias the automatic enrolment scheme is designed to address. [3]

Answer:

The automatic enrolment scheme is designed to address status quo bias and procrastination arising from bounded rationality and bounded will-power (1 mark). Status quo bias refers to the tendency of individuals to stick with the default option rather than making an active choice, even when switching would be in their interest (1 mark). The data shows that when employees were automatically enrolled (with the option to opt out), the participation rate rose from 34% to 82%, and the average contribution rate increased from 4.5% to 6.8%. This dramatic increase indicates that many individuals were not saving adequately for retirement not because they chose not to, but because they were influenced by inertia and the cognitive effort required to actively enrol. The 12% opt-out rate suggests that the vast majority accepted the default, consistent with status quo bias (1 mark).

Marking descriptors:

• 1 mark: Correct identification of the behavioural bias (status quo bias / inertia).
• 1 mark: Definition or explanation of the bias.
• 1 mark: Reference to the data to support the explanation.

(b) Using the data, evaluate the effectiveness of the automatic enrolment scheme in increasing retirement savings. In your answer, consider both the strengths and limitations of the evidence presented. [4]

Answer:

Strengths of the evidence:

• The participation rate increased from 34% to 82%, a substantial 48-percentage-point increase, suggesting that automatic enrolment has been highly effective in overcoming inertia and increasing retirement savings coverage (1 mark).
• The average contribution rate also increased from 4.5% to 6.8%, indicating that not only are more people saving, but they are saving a higher proportion of their income (1 mark).

Limitations of the evidence:

• The data covers only three years (2014–2017). It is unclear whether the high participation rate will be sustained over the long term, or whether the novelty of the scheme has temporarily boosted engagement (1 mark).
• The data does not account for other factors that may have influenced savings behaviour during this period, such as changes in income levels, economic conditions, or other government policies. Without a control group, it is difficult to attribute the entire increase to the automatic enrolment scheme alone.
• The average contribution rate of 6.8% may still be insufficient for adequate retirement income. The default rate of 6% may be too low, and the data does not show whether employees increased their contributions beyond the default over time.
• The 12% opt-out rate, while relatively low, still represents a significant minority who may have good reasons to opt out (e.g., financial constraints), and the scheme does not address the adequacy of savings for this group (1 mark).

Marking descriptors:

• 1 mark: Identification of a strength with data reference.
• 1 mark: Identification of a second strength or elaboration with data reference.
• 1 mark: Identification of a limitation (e.g., time frame, confounding factors, adequacy).
• 1 mark: Identification of a second limitation or deeper critical point.

(c) Discuss one additional policy measure the government of Country Z could introduce to further improve retirement savings outcomes, and evaluate its likely effectiveness. [3]

Answer:

One additional policy measure is auto-escalation, where the default contribution rate automatically increases each year (e.g., by 1 percentage point annually) up to a cap, unless the employee opts out (1 mark). This addresses the problem that the current default of 6% may be insufficient for adequate retirement savings, and that employees may not actively increase their contributions over time due to inertia (1 mark). Auto-escalation leverages the same behavioural insight as automatic enrolment — that people tend to accept defaults — to gradually increase savings rates without requiring active decision-making. However, its effectiveness depends on whether employees notice and accept the increases; if the escalation is too aggressive, it may lead to higher opt-out rates. It also does not address the fundamental issue of low-income workers who may not be able to afford higher contributions. Combining auto-escalation with employer matching contributions and financial literacy education would likely yield the best results (1 mark).

Alternative acceptable answers:

• Employer matching contributions: The government could mandate or incentivise employers to match employee contributions (e.g., 50% match up to 6% of salary). This increases the marginal benefit of saving and addresses the incentive problem. Limitation: may increase costs for firms, potentially passed on to employees through lower wages.
• Financial education campaigns: The government could invest in programmes to improve financial literacy, helping individuals understand the importance of retirement savings. Limitation: evidence on the effectiveness of financial education alone is mixed; it may increase knowledge but not necessarily behaviour.
• Mandatory minimum contribution rates: The government could legislate a minimum contribution rate above the current default. Limitation: may impose hardship on low-income workers and face political resistance.

Marking descriptors:

• 1 mark: Clear identification of a relevant policy measure.
• 1 mark: Explanation of how the measure works and its rationale.
• 1 mark: Evaluation of likely effectiveness, including a limitation or condition.

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End of Answer Key