Referring to table 2-1: a student has only a few hours to prepare for two different exams this afternoon. the above table shows alternative possible exam scores with three alternative uses of the student's time. the opportunity cost of scoring a 94 on the economics exam rather than a 77 is:

The correct answer is:  15 points on the History exam.

Explanation:

Opportunity Cost is what a person sacrifices when they choose one option over another. It is calculating by subtracting the return of the best forgone option with the return of the chosen option. The outcome could be beneficial or prejudicial, depending on the case.

In the example (refer to the attached table), if the student chooses to score 94 in the economics exam then the student will get 76 in the History test. Thus, The opportunity cost of getting 94 instead of 77 in the Economics test, implies getting 76 instead of 91 in the History exam. It implies:

The opportunity cost of scoring 94 on the Economics exam rather than a 77 is 15 points on the History test.

answer: it is a cellular phone