Antibiotics target bacteria, not viruses

Steps:

• Recognize influenza as a viral infection, not bacterial.
• Note antibiotics like tetracycline and rifampin target prokaryotic (bacterial) structures: 70S ribosomes and RNA polymerase.
• Infer penicillin, a common antibiotic, also acts on bacteria (cell wall).
• Conclude no listed antibiotic affects viral replication.

Why D is correct:

• Antibiotics are defined as antimicrobial agents selective for bacteria; viruses lack prokaryotic machinery and require antivirals.

Why the others are wrong:

• A. Penicillin inhibits bacterial cell wall synthesis via peptidoglycan interference.
• B. Tetracycline blocks bacterial 70S ribosome function, halting protein synthesis.
• C. Rifampin binds prokaryotic RNA polymerase, preventing bacterial transcription.

Final answer: D