Which statement best defines source reduction?

Which statement best defines source reduction?

• A. Removal or reduction of larval habitats that is most effective and economical; eliminating sites where larvae develop
• B. Killing adult mosquitoes with contact insecticides
• C. Releasing sterile male mosquitoes
• D. Cleaning up litter and debris

Answer: (A)

Source reduction aims to prevent mosquitoes by removing or reducing larval habitats, stopping the life cycle before mosquitoes become adults. The best definition describes removing larval habitats or eliminating sites where larvae develop, because it directly targets the stage when mosquitoes are most vulnerable and reduces production at the source. This approach is usually the most effective and economical, since fewer breeding sites mean fewer mosquitoes without relying on chemical controls. Killing adults addresses mosquitoes after they’ve already emerged and doesn’t reduce the number of habitats, releasing sterile males targets reproduction without removing breeding sites, and while cleaning up litter and debris helps reduce some potential water-holding containers, it isn’t as direct or comprehensive a definition of source reduction as eliminating larval habitats.

Source reduction aims to prevent mosquitoes by removing or reducing larval habitats, stopping the life cycle before mosquitoes become adults. The best definition describes removing larval habitats or eliminating sites where larvae develop, because it directly targets the stage when mosquitoes are most vulnerable and reduces production at the source. This approach is usually the most effective and economical, since fewer breeding sites mean fewer mosquitoes without relying on chemical controls. Killing adults addresses mosquitoes after they’ve already emerged and doesn’t reduce the number of habitats, releasing sterile males targets reproduction without removing breeding sites, and while cleaning up litter and debris helps reduce some potential water-holding containers, it isn’t as direct or comprehensive a definition of source reduction as eliminating larval habitats.