Question : Which energy source is considered conventional?
Option 1: Wind energy
Option 2: Solar energy
Option 3: Geothermal energy
Option 4: Fossil fuels
Correct Answer: Fossil fuels
Solution : The correct answer is (D) Fossil fuels
Fossil fuels, such as coal, oil, and natural gas, are considered conventional energy sources. They have been widely used for many years and are derived from ancient organic materials. Fossil fuels are burned to produce heat or generate electricity and have been the dominant source of energy for various sectors, including transportation, industry, and residential use.