Solution:

• The Constituent Assembly of India was established in accordance with the provisions of the Cabinet Mission Plan of May 1946.
• The Assembly was made up of 389 members who represented provinces (292), states (93), Chief Commissioner Provinces (3), as well as Balochistan (1).
• On December 9, 1946, the Assembly convened for the first time and elected Dr. Sachhidannand Sinha, the Assembly’s oldest member, as Provisional President.
• Dr. Rajendra Prasad was elected as the Assembly’s permanent Chairman on December 11, 1946.
• The Assembly was to be composed of proportional representation from existing provincial legislatures and princely states.
• The Assembly was to be divided into three sections: Punjab &the North-West, Bengal-Assam, and the rest of India.