基礎econ-u01-d02
A school gives up using one classroom for evening club practice so it can be used for extra tuition. The opportunity cost of the club practice is best described as:
A. The tuition income, or the other benefit, forgone by not renting the room out✓ 答案
B. The electricity bill for that evening only
C. The club membership fee paid by students
D. The teacher's salary for that session only
解說
Opportunity cost is the value of the next-best alternative given up, not just the running costs of the chosen option. Here the room could have earned tuition income, so that is the forgone benefit.