The correct answer is (c). The Sarkaria Commission was set up in 1983 by the Government of India to review the relationship between the Centre and the States. The Commission was headed by Justice R.S. Sarkaria and submitted its report in 1988. The report made a number of recommendations for improving the Centre-State relations.
The other options are incorrect. Option (a) is incorrect because the Sarkaria Commission was not set up to review the relationship between the Prime Minister and the President. The relationship between the Prime Minister and the President is governed by the Constitution of India. Option (b) is incorrect because the Sarkaria Commission was not set up to review the relationship between the Legislative and the Executive. The relationship between the Legislative and the Executive is governed by the Constitution of India. Option (d) is incorrect because the Sarkaria Commission was not set up to review the relationship between the Executive and the Judiciary. The relationship between the Executive and the Judiciary is governed by the Constitution of India.