It's not likely that a country will specialize completely in one good even if it has a lower opportunity cost because
A. Comparative advantage is not a workable concept in the world economy.
B. Opportunity costs increase as more of a good is produced.
C. The country would end up inside its production possibilities curve.
D. The country would want to save some of the good for its own citizens.
Answer: B
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Bond ratings
A) are published annually by the federal government and are based largely on information contained in corporate tax returns. B) are published annually by the federal government and are based on publicly available information. C) are published monthly by the federal government and are based on publicly available information. D) are published by private bond-rating agencies.
Which theory would support the idea that education does not enhance productivity and therefore raising all workers' educational levels would not affect wages?
a. signaling theory b. human-capital theory c. physical-capital theory d. the efficient-market hypothesis