Regarding the functions of our respiratory system, mark the wrong entry

Options

A. Humidifies the air
B. Warms up the air
C. Diffusion of gases
D. Cleans up the air

Answer

d

Explanation

But, all the given options are correct regarding the functions of the respiratory system. The air is filtered in the nose and the mucus lining the respiratory epithelium in the trachea helps to trap the dust particles, thus cleaning the air. Thus option (d) is also true as a function