Which diagram best illustrates the economic concept of opportunity cost?

Hello. You forgot to place the diagrams. It is important to remember, that the questions must be posted complete, so that you get the answer you deserve.

The diagrams are in the figure attached below:

The letter B is the right answer.

Explanation:

Opportunity cost is an economic term related to a moment of choice, in which an individual must give up something, so that something else can be done. This term applies not only to economics, but to various situations in different sectors and even in our personal lives.

An example of this can be seen in options B, which is shown in the attached figure below. In the option, we are faced with a situation where if the city decides to invest in road repair, that same city will not have enough money to build a new museum. Therefore, the city must make a choice.