Which of the following best defines comparative advantage in terms of international trade?
Awhen a nation only imports and never exports
Bwhen a nation only exports and never imports
Cwhen a nation has more buying power than any other nation
Dwhen a nation can produce a good or service at a lower opportunity cost than any other nation?
Awhen a nation only imports and never exports
Bwhen a nation only exports and never imports
Cwhen a nation has more buying power than any other nation
Dwhen a nation can produce a good or service at a lower opportunity cost than any other nation?