The most common risk factor associated with development of COPD is:
A) alpha-1 anti-trypsin deficiency.
B) environmental exposure to pollutants.
C) lung cancer.
D) cigarette smoking.
E) cystic fibrosis.

Question

Quizplus · Accepted Answer

Cigarette smoking is the most common risk factor associated with the development of COPD. Environmental exposure to pollutants and alpha-1 anti-trypsin deficiency can also contribute to COPD, but they are not as common as cigarette smoking. Lung cancer and cystic fibrosis are not directly related to the development of COPD.

The Most Common Risk Factor Associated with Development of COPD