Exp) Option a is the correct answer.

The Constituent Assembly established 22 committees, including the drafting committee, to prepare the constitution. Out of these, eight were major committees and the others were minor committees. Major Committees and their chairman: • Union Powers Committee – Jawaharlal Nehru (Pair 1 is correct) • Union Constitution Committee -Jawaharlal Nehru (Pair 3 is incorrect) • Provincial Constitution Committee -Sardar Patel (Pair 2 is incorrect) • Drafting Committee – Dr. B.R. Ambedkar • Advisory Committee on Fundamental Rights, Minorities and Tribal and Excluded Areas – Sardar Patel. This committee had the following five sub-committees: • Fundamental Rights Sub-Committee – J.B. Kripalani • Minorities Sub-Committee – H.C. Mukherjee (Pair 4 is incorrect)

North-East Frontier Tribal Areas and Assam Excluded & Partially Excluded Areas Sub-Committee -Gopinath Bardoloi • Excluded and Partially Excluded Areas (other than those in Assam) Sub-Committee – A.V. Thakkar. • North-West Frontier Tribal Areas Sub-Committee • Rules of Procedure Committee – Dr. Rajendra Prasad • States Committee (Committee for Negotiating with States) – Jawaharlal Nehru • Steering Committee – Dr. Rajendra Prasad.