You are presented with the quiz "What does breathing pollutants do?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "air pollution harms the respiratory and circulatory systems" and "breathing air pollutants can increase the chances of experiencing health problems". So, what's the best answer to the question?

Pick your answer from: -- Harms the respiratory system. -- destroying life. -- scraping oneself on a contaminated object. -- direct damage to the lungs. -- cause people to become sick.. -- Heals the respiratory system. -- Harms the stomach. -- Improves vision.
Answer:
Harms the respiratory system