One country has a comparative advantage over another when it: A. can create economic growth with less trade. B. is better able to produce all of the goods it needs. C. is able to easily produce more of a good. D. can produce a good at a lower opportunity cost.

D. can produce a good at a lower opportunity cost.​

Explanation:

When a country manages to produce a good or service at a lower cost of opportunity than its trading partners, it means that that country has a comparative advantage. In this case, it is worth remembering that opportunity cost is the term that determines the value that a producer renounces when making a decision on which product will be produced and which will be rejected.

can produce a good at a lower opportunity cost

Explanation: A P E X