Fish which eradicates mosquito larvae is

The correct option is D Gambusia
The western mosquitofish (Gambusia affinis) is a species of freshwater fish, also known commonly as simply mosquitofish. Mosquitofish were introduced directly into ecosystems in many parts of the world as a biocontrol to lower mosquito populations, which in turn negatively affected many other species in each distinct bioregion. Based on diet, mosquitofish are classified as larvivorous fish. Their diet consists of zooplankton, small insects and insect larvae, and detritus material. Mosquitofish feed on mosquito larvae at all stages of life. Adult females can consume hundreds of mosquito larvae in one day.