You are presented with the question "what protects the body from harmful substances?" and the following answer choices: 
- h2o
 - brain
 - hard outer covering
 - fur and fat
 - protective bony armor
 - salt and pepper
 - epidermis and dermis
 - deoxyribonucleic acid

Now knowing that skin is used for protecting the body from harmful substances and skin is comprised of two layers, the epidermis and dermis, choose the best answer.


 

       epidermis and dermis  