Fact 1: Viruses cannot reproduce by themselves.

Fact 2: Often viruses are the cause of myocarditis.

Given the two facts above, answer the question "the cause of myocarditis cannot what?" with the following options: 
- They may not survive.
 - direct damage to the lungs
 - A compound that donates proton
 - live by the shore
 - microorganisms
 - survive in a body
 - reproduce by themselves
 - eat by themselves


 

       reproduce by themselves  