The Constituent Assembly met for the first time on:

Correct option is D

The Correct Answer is D: 9th December 1946.

Explanation:
The first meeting of the Constituent Assembly of India was held on 9th December 1946 in the Central Hall of Parliament, New Delhi. Dr. Sachidananda Sinha was appointed as the temporary President of the Assembly.

The members were elected in the elections held in 1952, after that first Rajya sabha meeting was constituted on 13 May 1952. This date is remembered with pride and joy because of the newly constituted council of state sat together for the first time.
The Constituent Assembly met for the first time in New Delhi on 9 December 1946 in the Constitution Hall which is now known as the Central Hall of Parliament House. The Constituent Assembly took two years, eleven months, and Eighteen days to complete the drafting of the Constitution.

Key Points:

• Total Members: Originally 389, reduced to 299 after the partition of India.
• Permanent President:Dr. Rajendra Prasad (elected on 11th December 1946).
• Objective Resolution: Introduced by Jawaharlal Nehru on 13th December 1946, forming the basis of the Preamble.
• Drafting Committee: Chaired by Dr. B.R. Ambedkar, formed on 29th August 1947.
• Constitution Adoption:26th November 1949, came into effect on 26th January 1950.

Additional Information:

• 15th August 1947: India gained independence, and the Constituent Assembly became a sovereign body.
• Last Meeting: Held on 24th January 1950, where the National Anthem (Jana Gana Mana) was adopted.
• Working Duration:2 years, 11 months, and 18 days, with 11 sessions.