Up to 90% of persons with (COPD) have a history of
A) smoking.
B) exposure to industrial chemicals.
C) exposure to air pollution.
D) allergies.

Question

Quizplus · Accepted Answer

Smoking is the primary cause of COPD, responsible for up to 90% of cases. Other risk factors, such as exposure to industrial chemicals and air pollution, may also contribute to the development of COPD, but to a lesser extent. Allergies are not a significant risk factor for COPD.

Up to 90% of Persons with (COPD) Have a History