Answer: Console
Step-by-step explanation:
Opportunity cost is what one forgoes in order to get somethings else. Opportunity cost is as a result of limited resources hence a choice has to be made.
From thw question, we are told that
Nick won $1000 lottery prize and he can't decide what he should spend the money on buy as he wanted a console, a bike ,a watch or go on a trip. We are further told that he gives up the bike and the watch but he really wants the console and that in the end he saves it all for the trip.
The opportunity cost here is the console. He wasn't really interested in the bike or watch but he really as very interested in the console and he eventually gave up on the console for the trip.