You are presented with the question "what can have a negative impact on humans if contained in food they eat?" and the following answer choices: 
- h2o
 - vitamins
 - toxins
 - bacteria
 - protein
 - contamination
 - Smoking
 - herbicide

Now knowing that eating food that contains pesticides can have a negative impact on humans and herbicides are the leading type of pesticides, in terms of both user expenditure and volumes used, choose the best answer.


 

        herbicide 