Antibiotics treat bacterial infections. If a doctor is prescribing antibiotics to a patient, which disease does the patient most likely have?

Antibiotics work against bacteria, so they are most likely prescribed when the illness is caused by bacteria. Pneumonia can be a bacterial infection, while sleep apnea, emphysema, and cystic fibrosis are not bacterial infections treated with antibiotics as the primary treatment. Therefore, pneumonia is the best choice.

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