The correct answer is (c), Kudankulam.
Kudankulam is a nuclear power plant located in Tamil Nadu, India. It has two units, each with a capacity of 1,000 megawatts. The plant was commissioned in 2013 and 2016.
Kakarapar is a nuclear power plant located in Gujarat, India. It has two units, each with a capacity of 220 megawatts. The plant was commissioned in 2000 and 2005.
Kaiga is a nuclear power plant located in Karnataka, India. It has four units, each with a capacity of 220 megawatts. The plant was commissioned in 1985, 1987, 1990, and 2000.
Tarapur is a nuclear power plant located in Maharashtra, India. It has two units, each with a capacity of 220 megawatts. The plant was commissioned in 1969 and 1972.
Kudankulam has the highest total installed capacity of 2,000 megawatts, followed by Kakarapar (440 megawatts), Kaiga (880 megawatts), and Tarapur (440 megawatts).