Of all factors, what is the most important risk factor in pulmonary disease?
A) Air pollution from vehicles
B) Dangerous chemicals in the workplace
C) Active and passive cigarette smoke
D) Loss of the ozone layer of the atmosphere

Question

Quizplus · Accepted Answer

Active and passive cigarette smoke is the most important risk factor in pulmonary disease, as it is a major cause of lung cancer, chronic obstructive pulmonary disease (COPD), and other respiratory illnesses. Air pollution, dangerous chemicals, and loss of the ozone layer can also contribute to pulmonary disease, but cigarette smoke is the primary factor.

Of All Factors, What Is the Most Important Risk Factor