All Three Methods Control Malaria

Steps:

• Recognize malaria vectors as mosquitoes that transmit the parasite.
• Confirm statement 1: Insecticides eliminate mosquitoes, reducing transmission.
• Confirm statement 2: Bed nets create barriers, preventing mosquito bites.
• Confirm statement 3: Antimalarial drugs inhibit parasite growth in humans.

Why A is correct:

• All three align with WHO malaria control strategies, targeting vectors, prevention, and treatment.

Why the others are wrong:

• B excludes drugs, ignoring human-level intervention.
• C limits to insecticides, overlooking barriers and drugs.
• D omits insecticides, neglecting vector reduction.

Final answer: A