Final answer:
The production possibility curve for the United States would decrease due to the reduction in the labor force caused by the zombie apocalypse.
Step-by-step explanation:
The production possibility curve for the United States would decrease as a result of the zombie apocalypse. This is because the human population would be significantly reduced, leading to a reduction in the available labor force. With fewer people able to work, the overall production capacity of the country would decrease.
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