Fact 1: Viruses infect and live inside the cells of living organisms.

Fact 2: Plants are complex living organisms.

Given the two facts above, answer the question "Plants can be infected by what?" with the following options: 
- human pathogens
 - infected meat
 - Pesticides
 - insects
 - human papillomavirus
 - viruses
 - fungi
 - bacteria


 

      viruses   