You are presented with the question "What cannot reproduce by itself?" and the following answer choices: 
- Leptospirosis
 - cigarettes
 - acetic acid
 - influenza
 - Acids
 - bacteria
 - anemia
 - fungi

Now knowing that viruses cannot reproduce by themselves and influenza Virus Influenza viruses make up the family Orthomyxoviridae, choose the best answer.


 

    influenza     