Final answer:
The correct fossil fuel in this context is petroleum, which is a liquid hydrocarbon formed from the breakdown of microscopic marine organisms.
Step-by-step explanation:
The fossil fuel formed from marine organisms that is often found in folded or tilted layers and used for heating and cooking is petroleum. This fossil fuel is a liquid hydrocarbon and is produced by the breakdown of vast quantities of microscopic plants and animals.
The formation of petroleum as a deposit spanned several hundred million years and is retrieved today for our use much faster than the rate it was formed. When comparing the three main types of fossil fuels: coal, which is solid; petroleum, which is liquid; and natural gas, which is in a gaseous state, it is clear that petroleum is the correct choice in this context.