You are presented with the question "What from dead proteins help to insulate and protect the body?" and the following answer choices: 
- follicles
 - bioaerosols
 - Energy
 - sweating
 - fossil fuels
 - layers of fat
 - fur and fat
 - fungi

Now knowing that hair helps to insulate and protect the body and hair is built by the hair follicle from dead proteins produced by skin cells called keratin, choose the best answer.


 

 follicles        