Question

What is the primary cause of Chronic Bronchitis?

a.

Heavy, long-term cigarette smoking

b.

Exposure to environmental pollutants

c.

Genetic predisposition

d.

Infection

Answer: (a).Heavy, long-term cigarette smoking Explanation:The primary cause of Chronic Bronchitis is heavy, long-term cigarette smoking which irritates the bronchial tubes and causes them to produce excess mucus.

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Q. What is the primary cause of Chronic Bronchitis?

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