Answer:
going out to eat,
Step-by-step explanation:
In this scenario, the opportunity cost would be going out to eat, which is what you are giving up doing. Opportunity cost is just that, whatever you give up in order to accept another opportunity between two or more choices. In this scenario, the two choices were going to the movies or going out to eat, since you chose to go to the movies your opportunity cost was going out to eat. If you would have chosen to go out to eat, then your opportunity cost would have instead been going to the movies since you gave that up.