Hoi!
A cost-benefit analysis is an estimate of the pros and cons of carrying out an action. Often, a cost-benefit analysis is made of an action that can have a significant impact on other things.
The correct answers are:
The type of technology used within the school
The equipment needed in the cafeteria to provide healthy or unhealthy lunches
The equipment needed for art facilities within the school.
These projects deserve a cost-benefit analysis because they can have a rather significant impact on the success of the school.