Fuel oil and bitumen is 38% in demand

Petrol and Naptha is 27% in demand
Diesel is 23% in demand.
A question asks: Why are these fractions in demand?
I am not sure how to answer this questions and please advise me to how to answer this question.
Thanks in advance

2 answers

Fuel oil is used for heating homes and industrial plants. Bitumen is another word for asphalt and it is used in a variety of ways. Petrol and diesel are used for automotive and other engines. Naphtha is used a a solvent. I suppose the law of supply and demand is what creates the demand. There is a demand because they are useful for a number of purposes. You can edit this to fit the question.
Thank you very much, this information has helped to answer my question.