Suppose Dominic decides to join the Photography Club. Which result would be a cost?
Dominic will give up the chance to be in the Theater Club. He would have had more fun in the Theater Club than in the Photography Club. Dominic will save some time. He would have spent more time in the Theater Club than in the Photography Club.
Dominic is deciding whether to join the Theater Club or the Photography Club at school. He wants the club he joins to be fun. But he doesn't want it to take up too much time.
Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you want or need.
This result is a cost. It involves giving up or spending something that Dominic wants or needs:
Dominic will give up the chance to be in the Theater Club. He would have had more fun in the Theater Club than in the Photography Club.