True or False if False why? In an effort to control malaria stagnant water bodies where mosquito larvae develop into adu

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True or False if False why?
In an effort to control malaria stagnant water bodies where
mosquito larvae develop into adults are being sprayed with
insecticide. Biologists have observed that in these sprayed water
bodies there is variation among individual larvae in whether they
die due to insecticide poisoning and genetic variation among larvae
in levels of enzymes that are thought to detoxify insecticides.
These observations are sufficient to predict that increased genetic
resistance to insecticides will evolve in this population of
mosquitoes.