question 39

Timed Test This test has a time limit of 2 hours. This test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Not allowed. This test can only be taken once. ? Attempts Force This test can be saved and resumed at any point until time has expired. The timer will continue to run if you leave the test. Completion Your answers are saved automatically. Remaining Time: 52 minutes, 58 seconds. Less than half of the time remains. Question Completion Status: > A Moving to another question will save this response. > Question 39 1 points Save Answer Complete the following sentence. Marginal cost is O equal to marginal benefit. the total cost of an activity. the opportunity cost of an increase in an activity. the total cost of a decrease in an activity. O the opportunity cost of a decrease in an activity. > A Moving to another question will save this response. &gt