What is the best definition of an "opportunity cost"?

Question

Quizplus · Accepted Answer

Opportunity cost refers to the loss of potential gain from other alternatives when one alternative is chosen. In this context, none of the provided options directly relate to the economic concept of opportunity cost except for option A, which can be interpreted as the cost (loss of health) associated with choosing one option (delay in care) over another (receiving immediate care). However, this interpretation is a stretch as none of the options directly address the economic principle of opportunity cost.

What Is the Best Definition of an "Opportunity Cost