You are presented with the question "What can have a negative effect on humans?" and the following answer choices: 
- Proper exercise and nutrition.
 - Affirmation and praise.
 - influenza orthomyxoviruses
 - movement of tectonic plates
 - Eating unwashed strawberries.
 - Eating a healthy diet.
 - ozone depletion
 - scraping oneself on a contaminated object

Now knowing that eating food that contains pesticides can have a negative impact on humans and foods such as porous strawberries are hard to wash free of pesticides, choose the best answer.


 

     Eating unwashed strawberries.    