making a den in the hollow of a tree opening a trashcan looking for food moving four legs while running having a litter of four babies
I gave my students this multiple choice question: Which is most likely a learned behavior for a raccoon?

Only one answer is correct among these 4 choices:
- making a den in the hollow of a tree
- opening a trashcan looking for food
- moving four legs while running
- having a litter of four babies

Could you tell me which one is correct?

opening a trashcan looking for food