Madeleine can choose to go to the park with her friend or play a game with her brother. She chooses to go to the park with her friend. What is Madeleine's opportunity cost?

Eating dinner at home
Having fun at the park with her friend
Having fun playing with her brother
Visiting her grandparents

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.