Antibiotics target bacterial infections

Steps:

• Recall that antibiotics are a class of drugs designed to combat infections caused by microorganisms.
• Identify the specific type of microorganism antibiotics affect: bacteria.
• Distinguish antibiotics from treatments for viral infections or immune system enhancements.
• Match the function to the options, selecting the one that describes bacterial destruction.

Why A is correct:

• By definition, antibiotics are antimicrobial agents that either kill bacteria or inhibit their growth, treating bacterial infections like strep throat or pneumonia.

Why the others are wrong:

• B: Antibiotics are ineffective against viruses; antiviral drugs like oseltamivir are used instead.
• C: Passive immunity develops from receiving pre-formed antibodies, such as through immunoglobulin therapy, not antibiotics.
• D: Stimulating an immune response is the role of vaccines, which train the body to produce its own antibodies.

Final answer: A