Fact 1: Microorganisms cause food to spoil.

Fact 2: Likewise, eating certain foods can also cause serious sickness.

Given the two facts above, answer the question "Microorganisms can cause edibles to spoil and cause what?" with the following options: 
- filling meals
 - harmful substances
 - good tastes
 - Dehydration
 - healthy bodies
 - chickenpox
 - serious sickness
 - Pollution


 

       serious sickness  