The correct answer is Mahatma Gandhi Explanation & Key Takeaways: • Mahatma Gandhi was the sole representative of the Indian National Congress in the Second Round Table Conference. • The Second Round Table Conference was held in London from 7th September 1931 to 1st December 1931. • Gandhi represented the Indian National Congress and voiced the aspirations and demands of the Indian people for self-rule. • Despite his efforts, the conference did not result in any significant agreement or progress towards Indian independence. • Gandhi's participation in the conference was a crucial moment in the Indian struggle for independence and highlighted the determination of the Congress to achieve self-governance. Related Concepts: • The Round Table Conferences were a series of three conferences organized by the British government to discuss constitutional reforms in India. • The first conference was held in 1930, the second in 1931, and the third in 1932. • The Indian National Congress boycotted the first and third conferences, but Gandhi attended the second conference as the sole representative of the Congress. • The failure of the conferences to achieve any substantial progress led to increased civil disobedience and demands for complete independence by the Indian people. • Ultimately, the efforts and sacrifices of Indian leaders and citizens culminated in India gaining independence on 15th August 1947.