Correct Answer: Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

Solution : The correct answer is (a) Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

The assertion states that commercial energy sources play a crucial role in driving industrial and economic growth, which is correct. Commercial energy sources, such as coal, natural gas, and oil, are extensively used in various industries for electricity generation, manufacturing processes, transportation, and other energy-intensive activities. These energy sources provide a consistent and reliable energy supply, which is vital for powering industrial operations and driving economic growth. Industries rely on commercial energy sources to fuel their machinery, equipment, and production processes, enabling them to operate efficiently and meet the demands of a growing economy.

The reason provided states that commercial energy sources provide a consistent and reliable energy supply for industrial operations, and this is the correct explanation of the assertion. Industries require a stable and uninterrupted energy supply to maintain their production processes and meet the energy demands associated with industrial activities. Commercial energy sources, such as fossil fuels, are known for their high energy density, which makes them suitable for powering industrial machinery and equipment consistently over extended periods. The reliable and continuous supply of energy from commercial sources ensures that industries can operate smoothly and contribute to economic growth.

Therefore, both the assertion and reason are correct, and the reason serves as the correct explanation for why commercial energy sources play a crucial role in driving industrial and economic growth.