Answer:
choosing to spend one more hour studying economics because you think the improvement in your score on the next quiz will be worth the sacrifice of time.
Explanation:
Marginal thinking: In economics, the term "marginal thinking" is described as a process that requires or needs the "decision-makers" to figure out whether the profit related to one or more than one unit of something is considered as greater than its actual cost.
In other words, it described the process that states the number of extra resources that are being considered as worth.