The correct answer is (C) a-iv, b-i, c-ii, d-iii
Kakrapara – Gujarat, Rawat Bhata – Rajasthan, Kaiga – Karnataka, Tarapur – Maharashtra.
This is a standard map-based fact from the NCERT chapter on Minerals and Energy Resources. Students are expected to memorise the location of India's six nuclear power stations. The key pairs to remember: Tarapur → Maharashtra, Rawat Bhata → Rajasthan, Kakrapara → Gujarat, Kaiga → Karnataka. Option (C) is the only one that correctly matches all four.