Fact 1: Head hair is especially important in preventing heat loss from the body.

Fact 2: Although hair is created by living follicles in the scalp, it's dead.

Given the two facts above, answer the question "What in the scalp is especially important in preventing heat loss from the body?" with the following options: 
- cat hair
 - a cuticle
 - lint
 - sweating
 - dog hair
 - living follicles
 - staying warm
 - looseness


 

      living follicles   