Where do fly larvae typically live?

Fly larvae, often referred to as maggots, are commonly found in decaying organic material, which can include food waste, rotting fruits and vegetables, and animal carcasses. Among the options provided, gelatinous material in sink drains is a suitable habitat due to the presence of organic matter, moisture, and darkness, all of which create an ideal environment for larvae to thrive and feed.

The presence of decomposing food particles and organic waste in sink drains promotes the growth of bacteria, which in turn attracts flies. Female flies are often drawn to such areas to lay their eggs, guaranteeing that the larvae have immediate access to nourishment once they hatch.

While fly larvae can inhabit other environments like soil, trees, or water bodies, the specific choice of gelatinous material in sink drains aligns closely with their biological needs and feeding habits, making it the most fitting answer in this context.