After years of cigarette smoking, Hartwig has developed a "smoker's cough." This means
A) he has lung cancer.
B) the cilia in his lungs are doing their job.
C) his smoking has resulted in constant respiratory infections.
D) his body is attempting to remove excess mucus from his lungs.

Question

Quizplus · Accepted Answer

A "smoker's cough" is the body's attempt to clear out the excess mucus produced in the lungs due to irritation from smoking.

After Years of Cigarette Smoking, Hartwig Has Developed a "Smoker's