The correct answer is The Second Round Table Conference. Explanation & Key Takeaways: • The Second Round Table Conference was held in London from 7 September 1931 to 1 December 1931 with the participation of Gandhi ji and the Indian National Congress. • The major difference between the first and the second conference was that the INC was participating in the second one. • The Indian National Congress decided not to participate in the First Round Table Conference. Many of the INC leaders were imprisoned due to their involvement in the civil disobedience movement. • The INC and the Labour Party decided not to attend The Third Round Table Conference. (The INC wasn’t invited). The First Round Table Conference: • The First Round Table Conference was held on 12 November 1930 in London. It was the first conference arranged between the Britishers and the Indians as equals. • It was boycotted by the Indian National Congress. Apart from the INC, the following participated: • Muslim League : Muhammad Ali Jinnah, Aga Khan, A.K. Fazlul. • Hindu Mahasabha :S. Moonje and M.R. Jayakar • Untouchable community: Dr. B R Ambedkar • Dr. B R Ambedkar demanded separate electorates for the ‘untouchables’ in 1st round table conference. The Second Round Table Conference: • The second round table conference took place in the year 1931. • It lasted from September 1931 to December 1931. • It was the only round table conference that was attended by Mahatma Gandhi. • He attended this conference after signing the Gandhi-Irwin pact • The key topic that was discussed at this conference was a separate electorate. • The Third Round Table Conference: • The third and last session was conducted on November 17, 1932. • Only forty-six delegates attended since most of the main political figures of India were not present. • The Labour Party from Britain and the Indian National Congress rejected to attend. • From September 1931 until March 1933, under the administration of the Secretary of State for India, Sir Samuel Hoare, the suggested reforms took the form reflected in the Government of India 1935.