B.R. Ambedkar was elected to the Constituent Assembly from

The correct answer is Option 1. Dr. B.R. Ambedkar’s journey to the Constituent Assembly involved two distinct phases. Initially, in 1946, he was elected from the Bengal Province (specifically Jessore and Khulna) with the support of the Scheduled Castes Federation and the Muslim League.

• Why Option 1 is correct: Following the Partition of India, the region from which Ambedkar was elected became part of East Pakistan. Consequently, he lost his seat. To ensure his expertise was available for drafting the Constitution, he was later re-elected from the Bombay Presidency through a by-election, after M.R. Jayakar resigned. However, in the context of his original entry into the Assembly, West Bengal (undivided Bengal) is the historically accurate starting point.
• Other Options: While he later represented Bombay, he was never elected from Madhya Bharat or Punjab.

Thus, Option 1 accurately reflects his primary election to the Assembly before the territorial changes of 1947.