Suppose Haley decides to see the leopards. Which result would be a cost?
A: Haley will spend more time walking to the leopards. They are on the other side of the zoo, but the elephants are close by.
B: Haley will enjoy seeing the leopards more than she would have enjoyed seeing the elephants.
This result is a cost. It involves giving up or spending something that Haley wants or needs:
Haley will spend more time walking to the leopards. They are on the other side of the zoo, but the elephants are close by.