Explanation:

- The Second Commission on Centre-State Relations was chaired by M.M. Punchhi, a former Chief Justice of India.

- Option 1: Vijay Kelkar

- He headed the Finance Commission, not any Centre-State Relations Commission.

- Option 2: R.S. Sarkaria

- He led the First Commission on Centre-State Relations, known as the Sarkaria Commission (1983–1988).

- Option 3: M.M. Punchhi

- He chaired the Second Commission on Centre-State Relations (set up in 2007).

- Option 4: None of the above

- Not correct, as option 3 is right.