You are presented with the question "The haircoat of a dog is useful for" and the following answer choices: 
- recovery time from fatigue
 - When it's cold
 - protect them
 - finding bones
 - preventing dog days
 - keeping the dog warm
 - keeping the dog cool
 - water conservation

Now knowing that preventing the transfer of heat from an organims 's body causes that organism to keep warm and body heat is trapped in the haircoat, choose the best answer.


 

      keeping the dog warm   