Q. Which one of the following has the smallest diameter?
A) Right primary bronchus
B) Left primary bronchus
C) Trachea
D) Respiratory bronchiole
Explanation
The correct answer is Option D: Respiratory bronchiole.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.