Fact 1: Hair helps to insulate and protect the body.

Fact 2: Hair grows from hair follicles within the skin.

Given the two facts above, answer the question "what helps insulate and protect the body" with the following options: 
- layers of fat
 - follicles within the skin
 - with their fur
 - the sun
 - it has a positive impact on it
 - electrons
 - sound waves
 - that material's properties


 

  follicles within the skin       