Question

which of these is a smoking - related disease that causes permanent damage to the lungs?
o emphysema
o dental decay
o type 2 diabetes
o stroke

Explanation:

Emphysema is a lung - related disease. Smoking damages the alveoli (air sacs) in the lungs. Over time, the walls of these alveoli break down, reducing the surface area for gas exchange. This damage is permanent. Dental decay is related to oral health (not lung), type 2 diabetes is a metabolic disorder (not directly lung - permanent damage from smoking in the context of this question), and stroke is related to blood vessels in the brain (not lung).

Answer:

emphysema