The correct option is A Framing the Constitution
Elections to the Constituent Assembly were held in July 1946. Its first meeting was held in December 1946. Soon after, the country was divided into India and Pakistan. The Constituent Assembly was also divided into the Constituent Assembly of India and that of Pakistan. The Constituent Assembly that wrote the Indian constitution had 299 members. The Assembly adopted the Constitution on 26 November 1949 but it came into effect on 26 January 1950.