A 20-year history of smoking causes airways to be obstructed as a result of:
A) excessive mucus production.
B) loss of elastic recoil.
C) infection and inflammation.
D) airway edema.

Question

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The Answer of A 20-year history of smoking causes airways to be obstructed as a result of:
A) excessive mucus production.
B) loss of elastic recoil.
C) infection and inflammation.
D) airway edema.

A 20-Year History of Smoking Causes Airways to Be Obstructed