When a person makes a choice, there is always a
a.
cost
b.
regret
c.
benefit
d.
problem

A. cost.

In economics, opportunity cost represents the benefit that a person misses out on when choosing one alternative over another. In every decision we make, there is a cost involved, even when the cost is only the inability of picking another alternative instead.

Opportunity costs are often overlooked, but they are important to consider when making any decision.