Petroleum and Coal are known as non-renewable fuels because they

Correct option is D

Petroleum and Coal are known as non-renewable fuels because they take many years to form.
• Any form of energy or material which cannot be renewed immediately or refurnished quickly are considered as non-renewable source of energy.
• Fossil fuels are considered as non-renewable resources because it takes hundreds of millions of years for their formation. Once consumed, they can't be reused immediately.