Which of the following represents a choice that involves sacrificing an alternative?

The concept of opportunity cost directly relates to the idea of sacrificing an alternative when making a choice. When you choose one option over another, the opportunity cost is the value of the next best alternative that you forego. This means every time a decision is made, there is an inherent cost associated with what is not chosen, reflecting the potential benefits of the alternative that is given up.

In contrast, the term trade-off refers to the broader process of balancing different options, but it does not specifically emphasize the value of what is sacrificed. Supply and demand are economic concepts that explain how goods and services are allocated in a market but do not directly pertain to personal choices and sacrifices. Thus, opportunity cost best encapsulates the idea of making a choice that involves sacrificing an alternative.