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

Fact 2: Sebaceous glands associated with hair follicles protect the skin of mammals.

Given the two facts above, answer the question "What protects a mammal's skin?" with the following options: 
- Fiber follicles
 - Exfoliation
 - resistance
 - layers of fat
 - evaporation
 - a cuticle
 - sensory neurons
 - fur and fat


 

 Fiber follicles        