In the context of marginal analysis, if the marginal cost of studying an additional session for the AP Microeconomics exam exceeds the marginal benefit derived from that session, it is optimal to continue studying until the marginal cost equals the marginal benefit.

Marginal analysis is a way to make decisions by comparing the extra benefits of an action to the extra costs. When studying for the AP Microeconomics exam, if the cost of studying one more session, like the time and effort you put in, is greater than the benefit you gain, such as improved understanding or better grades, you should stop studying. This means that you are spending more resources than you are gaining in return. For example, if studying for an extra hour only helps you understand one small concept while taking away time from rest or other subjects, it may not be worth it. The goal is to find a balance where the additional cost of studying matches the additional benefit you receive, ensuring you use your time and energy wisely.