A chronic intermittent disorder that causes constriction of the bronchial tubes, thus preventing air from passing freely, is​

A) ​asthma.
B) ​chronic obstructive pulmonary disease.
C) ​pneumonia.
D) ​influenza.

Chronic Intermittent Disorder

A condition characterized by recurrent episodes of illness or adverse symptoms that appear and disappear over time.

Bronchial Tubes

The air passages that lead from the trachea (windpipe) to the lungs, facilitating the flow of air during respiration.

Asthma

A chronic disease that causes constriction of the bronchial tubes, preventing air from passing freely and causing wheezing and difficulty breathing during attacks.