As they left his house he insured them that it was okay they could come to the party too because it was taking place where?\nOptions:\n- friend's house\n- home\n- patio\n- fraternity house\n- boat
Think hard. Detailed solution:
friend's house
Friend's house is always open for extra guests during a party.

Friend of a friend is also considered a friend.

A house always has space to accomodate extra people during a party.

.

Final answer: friend's house