The chairman of Fundamental Rights Sub-Committee of the Constituent Assembly was:

The correct choice is: “J.B. Kripalani”

The Constituent Assembly's Advisory Committee on Fundamental Rights, Minorities and Tribal and Excluded Areas was chaired by Sardar Vallabhbhai Patel. Its Fundamental Rights Sub-Committee was chaired by Acharya J.B. Kripalani, and its Minorities Sub-Committee by H.C. Mookherjee.

“Dr. Rajendra Prasad” was President of the Constituent Assembly. “Dr. B.R. Ambedkar” chaired the Drafting Committee. “Pt. Jawaharlal Nehru” chaired the Union Powers, Union Constitution and States Committees.