Answer:
Marginal cost will increase as your effort increases
Explanation:
The reason why marginal cost (the extra cost per extra unit of effort put into studying) increases as you study more is due to the diminishing marginal return that studying will have as you put more effort into it.
This diminishing marginal return simply means that the more you study, the lower is the benefit per unit of effort put into studying, which is the marginal benefit, and thus, the higher is the cost per unit of effor put into studying, or the marginal cost.
This is an economic law known as diminishing marginal return, and applies to almost any type of activity, from business activities, to worker productivity, to personal endeavors like studying for an exam.
