Fact 1: Mammals have a layer of fat under the skin to help insulate the body.

Fact 2: If it has hair it is a mammal.

Given the two facts above, answer the question "What does a hairy organism have under its skin to help insulate the body?" with the following options: 
- fat
 - hair
 - food
 - cell
 - nerves
 - coat
 - fur
 - marrow


 

 fat        