Name a common aquatic pest target for mosquito larvicides.

• A. Algae.
• B. Crayfish.
• C. Duckweed.
• D. Mosquito larvae.

Answer: (D)

The key idea is that mosquito larvicides are designed to kill mosquitoes while they are still in the water as larvae, preventing them from maturing into biting adults. That makes mosquito larvae the primary target because stopping them at the immature stage reduces the overall mosquito population. Algae and duckweed are plants, so they require different kinds of products (algaecides or herbicides), not mosquito larvicides. Crayfish are crustaceans and aren’t the typical target of mosquito-focused larvicides. So the best answer is the larvae of mosquitoes, since that’s exactly the stage these products are designed to affect.