You are presented with the quiz "What can have a negative effect on humans?" But you don't know the answer, so you turn to your teacher to ask for hints. He says 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". So, what's the best answer to the question?
Possible answers: 1. Proper exercise and nutrition.; 2. Affirmation and praise.; 3. influenza orthomyxoviruses; 4. movement of tectonic plates; 5. Eating unwashed strawberries.; 6. Eating a healthy diet.; 7. ozone depletion; 8. scraping oneself on a contaminated object;
5.