संविधान समितीच्या उद्घाटनाच्या बैठकीचे अध्यक्षस्थान पुढीलपैकी कोणी भूषविले होते ?

The correct answer is Option A (Sachchidananda Sinha).

Key Points:
• The Constituent Assembly held its first inaugural meeting on December 9, 1946.
• Following French practice, Dr. Sachchidananda Sinha, being the oldest member, was elected as the temporary/interim President of the Assembly.
• Later, on December 11, 1946, Dr. Rajendra Prasad was elected as the permanent President.
• Dr. B.R.
• Ambedkar was the Chairman of the Drafting Committee.
• Thus, Option 1 is correct.
• Key Takeaway: Interim President on 9 Dec 1946 = Dr. Sachchidananda Sinha. Permanent President on 11 Dec 1946 = Dr. Rajendra Prasad.