The saying that "There's no such thing as a free lunch" refers to the:
A) marginal principle.
B) reality principle.
C) spillover principle.
D) principle of opportunity cost.

Question

Quizplus · Accepted Answer

The saying "There's no such thing as a free lunch" reflects the principle of opportunity cost, which means that everything has a cost and that choosing one thing means giving up the opportunity to do something else with the same resources. In other words, even if something appears to be free, there is always some kind of cost associated with it.

The Saying That "There's No Such Thing as a Free