Which of the following is a commercial source of energy?

A. Agricultural waste

B. Dried dung

C. Sun

D. Natural gas

Answer: Option D

Solution(By Examveda Team)

Energy is broadly classified as commercial and non-commercial energy. Firewood, agricultural waste (straw, etc.) and animals waste (cowdung) are the important components of non-commercial energy.Coal, petroleum products, natural gas and, electricity are the important components of commercial energy. These goods are largely used for commercial purposes in the factories and farms.