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Which among the following is classified as an antibiotic?

1. Ampicillin
2. Ofloxacin
3. Aminoglycoside
4. Penicillin

Correct answer: Ampicillin

Solution

All four options relate to antibiotics, but Ampicillin is a specific semi-synthetic broad-spectrum antibiotic of the penicillin group, making it the most precisely defined antibiotic among the choices. Ofloxacin is a fluoroquinolone antibiotic, Aminoglycoside is a class, and Penicillin is a group name.

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