The correct answer is (b) M.N.Roy.
M.N.Roy was an Indian revolutionary, politician, and intellectual who played a major role in the Indian independence movement. He was also a founding member of the Communist Party of India. In 1940, he formed the Radical Democratic Party, which was a left-wing political party that advocated for socialism and democracy.
The other options are incorrect.
(a) Indrasen was a Bengali revolutionary who was active in the Indian independence movement. He was a member of the Jugantar Party and was involved in the assassination of British officials.
(c) Somendranath Tagore was a Bengali poet, musician, and social reformer. He was the son of Rabindranath Tagore and was a member of the Brahmo Samaj.
(d) Shachindranath Sanyal was a Bengali revolutionary who was active in the Indian independence movement. He was a member of the Anushilan Samiti and was involved in the Kakori train robbery.