Answer:
a. Chronic obstructive pulmonary disease (COPD)
Step-by-step explanation:
Chronic obstructive pulmonary disease (COPD) -
It is the lung disorder , which can lead to the hindrance in the flow of air from the lungs , is referred to as Chronic obstructive pulmonary disease (COPD) .
As , from the name , chronic means - short term , hence , this disorder is for short period of time .
The symptoms of this disease are as follow -
wheezing , cough , difficulty in breathing , mucus production etc .
This condition arises , due to long exposure to harmful gases , which may be due to pollution , or smoking cigarette .
The disease can even lead to heart disease , lung cancer etc.
Hence , from the given scenario of the question ,
The correct option is a. Chronic obstructive pulmonary disease (COPD) .