Fact 1: Hair is a fiber that is found only in mammals.

Fact 2: Hair has turned auburn red.

Given the two facts above, answer the question "What is a fiber found only in mammals?" with the following options: 
- Something that can be auburn
 - They have thick fur
 - Something that is self-aware
 - with their fur
 - To keep their body heat.
 - it helps plants in growing
 - it keeps an organism warm
 - Something that comes in a bundle of fibers


 

 Something that can be auburn        