A condition of the lungs characterized by widespread narrowing of the bronchioles and formation of mucus plugs, producing symptoms of wheezing, shortness of breath, and coughing, is:
A) asphyxia
B) croup
C) cystic fibrosis
D) asthma
D
Explanation: Although altered breathing can occur in all the options, it is due to a different etiology. Cystic fibrosis is genetic, causing excess mucus production, and croup is a viral infection resulting in a barking-type cough.
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