Solution:Census 2011states that the use of firewood for cooking purposes by households is highest at 49.0 per cent followed by LPG/PNG that occupies the share of 28.5 per cent in the country. India derives most of its cooking energy needs from solid fuels, such as cow dung cake, firewood, and crop residue.
On the contrary, developed countries, such as the USA, UK, Italy, Denmark and others use cleaner cooking fuels. Therefore, the correct option is (c).