Identify the civil servant who was Constitutional advisor to the Government of India and gave vital assistance to Drafting Committee of the Constitution.

B.N. Rau

The correct answer is Option (4) → B.N. Rau

B.N. Rau served as the Constitutional advisor to the Government of India and provided significant assistance to the Drafting Committee of the Indian Constitution.

The Constituent Assembly had 300 members. Of these, six members played particularly important roles. Three were representatives of the Congress, namely, Jawaharlal Nehru, Vallabh Bhai Patel and Rajendra Prasad. Besides this Congress trio, a very important member of the Assembly was the lawyer and economist B.R. Ambedkar. During the period of British rule, Ambedkar had been a political opponent of the Congress; but, on the advice of Mahatma Gandhi, he was asked at Independence to join the Union Cabinet as law minister. In this capacity, he served as Chairman of the Drafting Committee of the Constitution. Serving with him were two other lawyers, K.M. Munshi from Gujarat and Alladi Krishnaswamy Aiyar from Madras, both of whom gave crucial inputs in the drafting of the Constitution. These six members were given vital assistance by two civil servants. One was B. N. Rau, Constitutional Advisor to the Government of India, who prepared a series of background papers based on a close study of the political systems obtaining in other countries. The other was the Chief Draughtsman, S. N. Mukherjee, who had the ability to put complex proposals in clear legal language.