The correct option is B Ramsay McDonald
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. The outcomes of the first Round Table Conference were minimal and the British Government realized that the Indian National Congress needed to be part of deciding the future of constitutional government in India.