You are presented with the question "What can prevent 90 percent of the body's heat loss?" and the following answer choices: 
- Masks
 - fur
 - coats
 - bald head
 - increase body fat
 - sweaters
 - skin
 - hair

Now knowing that head hair is especially important in preventing heat loss from the body and almost 90 percent of the body's heat loss is from the head, choose the best answer.


 

        hair 