You are presented with the question "What effect do pathogens have." and the following answer choices: 
- Something with a head, thorax, and abdomen
 - none
 - healing
 - single-celled organisms
 - a negative impact on the body
 - influenza orthomyxoviruses
 - good health
 - depress neuronal excitability

Now knowing that disease-causing microbes have a negative impact on the body and harmful microbes that cause diseases are called pathogens, choose the best answer.


 

     a negative impact on the body    