Answer:
Paragraph 3.
Step-by-step explanation:
If we want to persuade the college officials to permit themselves the cost of upgrading exercise facilities for non-athletes, we must think of a way to remunerate their effort, as students who are not on any team do not bring revenue.
And it is exactly the objective of the third paragraph. It is true that the new upgraded facilities benefit the budget in no way, yet there is a possibility of a profit: a snack bar should be attached to the facility. That way students who use the facility will eventually start using the snack bar, too.