The correct option is A MK Gandhi
The first Round Table Conference convened by Labour Government Prime Minister Ramsay McDonald from 12 November 1930 to 19 January 1931 in London. While the Congress and most business leaders boycotted it, the Muslim League, the Hindu Mahasabha, the Liberals, and princes attended it. Prior to the Conference, M. K. Gandhi had initiated the Civil Disobedience Movement on behalf of the Indian National Congress and did not attend the conference.