Directions: Choose the correct sentence out of the four statements given. The statement should be correct according to the grammatical rules of the English language.

The mosquito were abundant but malaria rare or absent, in some localities, while in others the reverse was true.

In every localities the mosquito were abundant but malaria rare or absent, while in others the reverse was true.

In some localities the mosquitoes were abundant but malaria rare or absent, while in others the reverse was true.

In another's the reverse was true but in some localities the mosquito was abundant but malaria rare or absent.