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Which of the following, if it were to happen, would best accord with Malthus's contention as it is stated in the first paragraph?
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A.By 2040 the world's population increases marginally, and food production keeps pace with demand.
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B.By 2040 the world's population decreases marginally, and food production outstrips demand.
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C.By 2040 the world's population remains unchanged, and food production declines slightly.
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D.By 2040 the world's population has significantly increased, and food production has increased slightly.
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E.By 2040 the world's population has significantly decreased, and food production has decreased slightly.
D显示答案