Question

Which of these are the organs of human respiratory system?
A) Trachea B) Bronchus C) Alveolus D) All of these

Answer 1

option D) is the correct answer- Trachea, Bronchus, alveolus all of these are the organs of human respiratory system

Answer 2

Hey friend,
Here is your answer:

All the three parts mentioned, trachea, bronchus and alveolus are a part of the human respiratory system.
So, the correct option is D.

Hope it helps u.