What role does standing water play in mosquito development?

Standing water is crucial for the life cycle of mosquitoes, particularly for the development of their larvae. Mosquitoes lay their eggs in or near stagnant water sources because these environments provide the ideal conditions for the larvae to thrive. Once the eggs hatch, the larvae live in the water, where they feed and grow until they undergo metamorphosis into pupae, and eventually emerge as adult mosquitoes.

This breeding behavior is a critical factor in mosquito population dynamics; identifying and managing sources of standing water can significantly reduce mosquito populations. In contrast, while adult mosquitoes may rest in vegetation or other sheltered areas, the standing water is primarily vital for larval development, making option B the correct choice.