Imagine you are working for the Florida Public Health Department and you have been assigned the task of preventing malaria from spreading throughout the southern Everglades. Which of the following scenarios would have the greatest chance of success?

1. Developing a vaccination that would prevent the ability of the merozoites to reproduce within the hosts bloodstream
2. Devise a insect repellant that would prevent the Anopheles mosquito from biting a human host
3. Spraying the edges of the Everglades with a pesticide that will kill mosquitos
4. All of these scenarios would have a chance of success in preventing malaria from spreading throughout the southern Everglades.