In a two-nation world, comparative advantage in the production of a particular product means that one nation can produce

A) the product with fewer inputs than the other nation.
B) the product at lower average cost than the other nation.
C) the product at a lower domestic opportunity cost than the other nation.
D) more of the product than the other nation.

Comparative advantage refers to the ability of a country to produce a particular good or service at a lower opportunity cost than another country. Opportunity cost is the cost of a foregone alternative, which means that if one country can produce a good at a lower opportunity cost, it is more efficient than the other country. Therefore, choice C is the correct answer as it reflects the lower domestic opportunity cost of producing the particular product in one country.