Antibiotics target bacterial infections

Steps:

• Identify the primary function of antibiotics: they kill or inhibit bacteria.
• Recall that diseases are caused by various pathogens, including bacteria, viruses, parasites, or non-infectious factors.
• Match the treatment to the cause: antibiotics work only against bacterial causes.
• Eliminate options not involving bacteria.

Why A is correct:

• Antibiotics are defined as drugs that combat bacterial infections by disrupting bacterial cell walls or protein synthesis.

Why the others are wrong:

• B: Coronary heart disease is caused by plaque buildup in arteries, treated with lifestyle changes or surgery, not antibiotics.
• C: Malaria is a parasitic infection from Plasmodium, treated with antimalarial drugs like chloroquine.
• D: Viral infections, such as flu, are self-limiting or treated with antivirals; antibiotics do not affect viruses.

Final answer: A