Question

multiple choice question
opportunity cost is:
the marginal benefit minus the marginal cost.
the value of the opportunity that you give up when you choose one activity instead of another.
the expected value of buying a good or a service.
the financial cost of purchasing a good or a service.

Explanation:

Opportunity cost is defined as the value of the next-best alternative that is forgone when making a choice between different activities or options. The other options describe different economic concepts: marginal benefit minus cost is net marginal benefit, expected value of a purchase is related to expected utility, and financial cost is explicit monetary cost.

Answer:

the value of the opportunity that you give up when you choose one activity instead of another.