Multiple choice

Which body system is most likely to be affected by air pollutants?

  1. Circulatory system

  2. Respiratory system

  3. Digestive system

  4. Immune system

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Since air pollutants are inhaled, the respiratory system (lungs, airways) is the primary point of entry and the most directly affected system.