Correct Answer: thermal

Solution : The correct option is Thermal.

Thermal power generation, which includes both coal-fired and gas-fired power plants, accounts for a significant amount of India's power generation. Coal-fired power facilities have historically dominated the thermal sector. Because of the country's enormous coal deposits, existing infrastructure, dependable electricity supply, energy security, and historical economic viability, coal-fueled power plants are dominant in India. These facilities, however, pose environmental issues, forcing India to explore cleaner energy sources such as renewables and natural gas. Therefore, India is attempting to transition to cleaner, more sustainable energy sources such as solar, wind and hydroelectricity.