Explanation:

1st option is correct. An idea for a Constituent Assembly of India was proposed in 1934 by M. N. Roy, a pioneer of the Communist movement in India and an advocate of radical democracy. It became an official demand of the Indian National Congress in 1935, and was accepted by the British in August 1940. On 8 August 1940, a statement was made by Viceroy Lord Linlithgow about the expansion of the Governor-General's Executive Council and the establishment of a War Advisory Council. This offer, known as the August Offer, included giving full weight to minority opinions and allowing Indians to draft their own constitution.