Question

The part of the respiratory tract that is responsible for keeping healthy is

• A. Trachea
• B. Bronchi
• C. Nasal Cavity
• D. All of the above

Answer 1

The correct option is D

All of the above

The trachea, bronchi and the nasal cavity are lined up with a ciliated mucous membrane which traps dust and germs and prevents them from entering the lungs. Therefore, all of the options are parts of the respiratory tract that are responsible for keeping healthy.