You are presented with the question "What has a negative impact on the body?" and the following answer choices: 
- disease-causing microorganisms
 - air
 - water
 - wind and erosion
 - food
 - smallest agents of disease
 - exposure to cold
 - influenza orthomyxoviruses

Now knowing that disease-causing microbes have a negative impact on the body and microbes are also called microorganisms, choose the best answer.


 

 disease-causing microorganisms        