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QUESTION
Q14) One reason for emphysema is ... [ AMU 1992 ]

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correct

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Emphysema is a chronic respiratory disease where there is over-inflation of the air sacs (alveoli) in the lungs, causing a decrease in lung function, and often, breathlessness.
The main cause of emphysema is long-term exposure to airborne irritants, including:
Tobacco smoke, Marijuana smoke, Air pollution, Manufacturing fumes


Answer : (b)