Suppose Gina decides to eat the almonds. Which result would be a cost?
Gina will give up the chance to eat the fudge. Gina thinks fudge would have tasted better than almonds will. Gina will get to eat the almonds. The almonds will be healthier than the fudge would have been.
Gina is deciding whether to eat almonds or fudge for an afternoon snack. She would like to eat something tasty, but she is also trying to be healthier.
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 Gina wants or needs:
Gina will give up the chance to eat the fudge. Gina thinks fudge would have tasted better than almonds will.