Which of the following is the best option for cooking fuel?
LPG
Explanation for correct option:
Petroleum gas in its liquid state i.e. liquefied petroleum gas (LPG) is used as a fuel for cooking at home.
Explanation for incorrect option:
While kerosene is majorly used in oil lamps, jet fuels, etc.
Wood and Cow-dung cakes are also used as cooking fuels in a domestic hearth called chulhas, but these fuels produce a huge amount of smoke and are not very energy efficient.
Therefore, option (C) is correct.