Part 1: Complete the statement below. The marginal benet is the (total, incremental increase in) benefit associated with an increase in the activity. Part2: Complete the statement below. The marginal cost is the (total, incremental in crease in) cost associated with an increase in the activity. Claire is deciding whether to continue studying for an upcoming exam in her economics course. She has already studied quite a bit and knows the stuff pretty well. She already knows to "think at the margin\" and thus is considering whether to spend one additional hour studying. Part 3: \"Which of the following captures the marginal benet associated with Claire's decision to continue studying: (1') her score on the upcoming exam, or (ii) the amount by which her score will increase if she studies for one additional hour