Fact 1: Bacteria can cause people to become ill.

Fact 2: Also, when they get sick, the illness can progress at much greater speed.

Given the two facts above, answer the question "What does bacteria do?" with the following options: 
- be a medicine
 - morph into a virus
 - exhibit learned behavior
 - cause people to become sick.
 - dividing into two parts
 - grow and divide rapidly
 - decomposing dead organisms
 - Remove waste from the body


 

    cause people to become sick.     