The primary source of conventional power generation in Andhra Pradesh is:

Nuclear power
Coal-based thermal power
Hydropower
Wind power

The correct answer is: b) Coal-based thermal power.

Coal-based thermal power is the primary source of conventional power generation in Andhra Pradesh. In 2019, coal-based thermal power plants generated 62.4% of the state’s electricity. The other major sources of conventional power generation in Andhra Pradesh are hydropower (27.6%) and wind power (9.9%).

Nuclear power is not a major source of power generation in Andhra Pradesh. The state has one nuclear power plant, the Kakrapar Atomic Power Station, which has two reactors with a total capacity of 2,000 megawatts. However, this plant only generates about 2% of the state’s electricity.

Hydropower is a major source of power generation in Andhra Pradesh. The state has a number of hydroelectric dams, including the Nagarjuna Sagar Dam, the Srisailam Dam, and the Pulichintala Dam. These dams generate about 28% of the state’s electricity.

Wind power is a growing source of power generation in Andhra Pradesh. The state has a number of wind farms, including the Rayalaseema Wind Farm and the Kadapa Wind Farm. These wind farms generate about 10% of the state’s electricity.