Tetracycline is indicated for which of the following conditions?

Tetracycline is a broad-spectrum antibiotic that is particularly effective against a variety of gram-positive and gram-negative bacteria. It is often used to treat various infections, including those caused by unusual or resistant organisms.

Option B is correct because tetracycline is indicated for the treatment of rare pneumonias often caused by atypical pathogens such as Mycoplasma pneumoniae and Chlamydia pneumoniae. It is also effective against certain strains of Neisseria meningitidis, especially in cases where other antibiotics may not be indicated, or when the bacteria demonstrate resistance to common treatments.

Considering the other options, strep throat is primarily treated with penicillin or amoxicillin, which are more effective against Streptococcus pyogenes. Urinary tract infections (UTIs) are typically addressed with antibiotics like nitrofurantoin or trimethoprim-sulfamethoxazole, as they are often better suited for the common pathogens involved, such as E. coli. MRSA infections are usually managed with specific antibiotics such as vancomycin or linezolid, which are chosen for their activity against methicillin-resistant Staphylococcus aureus. While tetracycline can have some activity against MRSA, it is not typically