Why is oil the world's main source of energy?
A) It has an artificially low cost.
B) It has a low net useful energy yield.
C) It is environmentally friendly.
D) It is relatively expensive.

Question

Why is oil the world's main source of energy? 
A) It has an artificially low cost. 
B) It has a low net useful energy yield. 
C) It is environmentally friendly. 
D) It is relatively expensive.

Quizplus · Accepted Answer

Oil has historically been cheaper to extract and process compared to many other energy sources, which has made it the world's main source of energy. Its lower cost is often due to economies of scale in production and extraction technologies, as well as subsidies in some cases, rather than being inherently cheap.

Why Is Oil the World's Main Source of Energy