Answer:khakhi pants
Step-by-step explanation:
What is an opportunity cost?
Opportunity cost refer to choosing the next best thing when given your two alternatives that you both like the same.
Kyla hate black jeans which means she is less likely to choose them so if she has to choose something else other that the blue jeans , Kyla is likely to choose khakhi pants .
So opportunity cost is actual choosing another alternative and leaving the other when given that opportunity to choose amongst your favourites .