You are presented with the question "what does bacteria cause?" and the following answer choices: 
- loss of h2o
 - harmful substances
 - Pollution
 - serious illness
 - increase in oxygen
 - carbon
 - Deoxyribonucleicacid
 - symptoms

Now knowing that bacteria cause food poisoning and food poisoning is a serious illness, choose the best answer.


 

    serious illness     