I would say negotiation.
Engaging and accepting just makes it seem like you're willing to do it just for your friends.
Avoiding (could be a choice but it) makes it seem like you don't want to hang out with them.
C I think it is cause I just think
The answer is consumed. Think of a gallon of milk. There will always be an expiration date to let you know that after that date, it becomes too old to drink. This should not be confused with a "sell by" date, which signifies the deadline for each product to be taken off the shelf.
