You are presented with the question "Eating food that contains what can have a negative impact on humans?" and the following answer choices: 
- vitamins
 - antioxidants
 - Abnormal cell growth
 - pest-killing chemicals
 - Something that causes allergies
 - harmful substances
 - minerals
 - a pathogens

Now knowing that eating food that contains pesticides can have a negative impact on humans and pesticides are chemicals that kill pests, choose the best answer.


 

    pest-killing chemicals     