You are presented with the question "What does fur do?" and the following answer choices: 
- it serves as food
 - refract or absorb.
 - It helps them survive
 - absorb light energy
 - it catches fire
 - it drowns the organism
 - structure and function
 - it keeps an organism warm

Now knowing that preventing the transfer of heat from an organims 's body causes that organism to keep warm and fur or feathers help hold heat in, but some body heat always escapes, choose the best answer.


 

        it keeps an organism warm 