Answer:
C) $5,000.
Explanation:
The summer tuiton cost, are not relevant, as that is the option we choose. We need to compare going to summer school with the work we could take during summer
The opportunity cost is the cost of the best alternative rejected:
salary for the summer job 5,000
The rent expense cost is the same on both option, so there is no difference. It will not be included in the analysis.