Which antibiotic is known for treating a variety of bacterial infections?

Amoxicillin is an antibiotic that belongs to the penicillin group and is widely used to treat various bacterial infections. It works by inhibiting the synthesis of bacterial cell walls, leading to the death of the bacteria. Amoxicillin is effective against a broad range of organisms, making it a common choice for treating infections such as respiratory tract infections, urinary tract infections, and skin infections, among others. Its ability to combat both gram-positive and some gram-negative bacteria demonstrates its versatility as a treatment option in clinical settings.

In contrast, the other options listed do not function as antibiotics. Naprosyn is a nonsteroidal anti-inflammatory drug (NSAID) used primarily for pain relief and inflammation, while hydrocodone is an opioid pain medication effective for treating severe pain. Guaifenesin is an expectorant used to relieve chest congestion and is not an antibiotic. Thus, amoxicillin stands out as the correct answer due to its specific role in targeting and treating bacterial infections effectively.