W

II

.

where people use fossil fuels, they create

A sound

B) pollution

C) light

pollution

Without more context on what the question is about, it is difficult to be sure.

If it is a physic or chemistry question, where people use fossil fuels, they create energy, like A) sound, C) light and heat.

If it is about the environment, where people use fossil fuels, they create B) pollution.