Question

Fossil fuels formed over millions of years because extreme heat and pressure were applied to–

Answer 1

A. remains of organisms trapped between rock layers

Step-by-step explanation:

Dead and decayed remains of plants and animals are deposited and trapped under rock layers. These are later acted upon by intense heat and temperature, leading to the conversion of these remains of organisms into fossils fuels after many millions of years.

This is how most fossil fuels such as crude oil are formed naturally under rock layers beneath the sea and earth surface.