You are presented with the question "what can preventing the transfer of cause the body to keep warm in an organism?" and the following answer choices: 
- hair
 - Collagen
 - sweating
 - hydration
 - the skin
 - exercise
 - fur
 - energy

Now knowing that preventing the transfer of heat from an organims 's body causes that organism to keep warm and heat is a measurement of transferable energy, choose the best answer.


 

        energy 