Suppose Kimberly decides to go on the log ride. Which result would be a cost?

 - Kimberly will spend more ride tickets on the log ride than she would have spent on the balloon race.
 - Kimberly will have more fun on the log ride than she would have had on the balloon race.
This result is a cost. It involves giving up or spending something that Kimberly wants or needs:
Kimberly will spend more ride tickets on the log ride than she would have spent on the balloon race.