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Bronchitis is a condition that’s characterized by coughing and the secretion of mucus. A person with bronchitis has inflamed airways, which makes it hard to breathe. Where does a bronchitis infection start?
A)brain
B)heart
C)lungs
D)throat

Respuesta :

lungs....................
Bronchi are one of the tubules and air passageways that allow air to travel into the lungs.