Fact 1: Viruses cannot reproduce by themselves.

Fact 2: Influenza Virus Influenza viruses make up the family Orthomyxoviridae.

Given the two facts above, answer the question "What cannot reproduce by themselves?" with the following options: 
- fungi
 - insects
 - influenza
 - Leptospirosis
 - bacteria
 - ferns
 - mammals
 - acetic acid


 

   influenza      