You are presented with the question "What can cause disease, and have a negative impact on the body?" and the following answer choices: 
- Tiny living cells.
 - dead organisms
 - smoking tobacco
 - deoxyribonucleic acid
 - single-celled organisms
 - Body doubles.
 - Negative balance.
 - Crater impact.

Now knowing that disease-causing microbes have a negative impact on the body and microbes are tiny living cells, choose the best answer.


 

 Tiny living cells.        