A supply of clean air to breath is very important for good health. But air pollutants are everywhere. Which of the following techniques will most likely minimize your exposure to air pollutants?

• A. Proper location of dump sites.
• B. Don’t cook on a charcoal barbecue in an enclosed space.
• C. Protect yourself from medical radiation.
• D. Do not use a microwave over if the door does not close properly.