Considering whether adding a salad bar to a school lunch menu is cost effective is an example of weighing

Considering whether adding a salad bar to a school lunch menu is cost-effective is an example of weighing the amount of money paid.

This analysis shows how the contemplated project is likely to affect the school's operating results. A cost-benefit analysis will provide an estimate of the viability of add an item a school lunch menu

I believe the answer is: Disadvantages

Disadvantages refers to the situation that you see as unfavourable to obtain your goals. When considering a food plan, disadvantages could include things such as higher price, lesser nutrition, lesser popularity among the students, unwanted taste or smell, etc.