________ is a common respiratory illness characterized by...

Pneumonia is a common respiratory illness characterized by the inflammation of the air sacs in one or both lungs. The air sacs may fill with fluid or pus, causing symptoms such as cough with phlegm or pus, fever, chills, and shortness of breath.

Sinusitis is the inflammation of the sinuses.

Bronchitis is the inflammation of the lining of the bronchial tubes.

Laryngitis is the inflammation of the voice box (larynx).

Answer: Pneumonia