Fact 1: Skin is used for protecting the body from harmful substances.

Fact 2: Skin is the body's largest organ.

Given the two facts above, answer the question "What can protect the body from harmful substances?" with the following options: 
- the body's largest organ
 - layers of fat
 - Electric devices
 - bones
 - sunburns
 - hard outer covering
 - deoxyribonucleic acid
 - muscle


 

 the body's largest organ        