placing the coin in a freezer placing the coin in cool water leaving the coin on a counter rubbing the coin with cold hands
I gave my students this multiple choice question: A student wants to lower the temperature of a metal coin. Which action would make the coin the coldest?

Only one answer is correct among these 4 choices:
- placing the coin in a freezer
- placing the coin in cool water
- leaving the coin on a counter
- rubbing the coin with cold hands

Could you tell me which one is correct?

placing the coin in a freezer