You are presented with the quiz "Preventing the transfer of heat from an animal 's body causes that animal to keep what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "preventing the transfer of heat from an organims 's body causes that organism to keep warm" and "animals are organisms that have ingestive metabolism". 

So, what's the best answer to the question?


 

      warm     