The correct answer is (a), (b), (c), (d). Explanation & Key Takeaways: Responsive Co-operation Party - • The Responsive Cooperation Party was a political party operating in the Indian independence movement and was established by M. R. Jayakar, B. S. Moonje, N. C. Kelkar and others. • This Party was a political party operating in the Indian independence movement and was established by M. R. Jayakar, B. S. Moonje, Madhav Shrihari Aney, N. C. Kelkar. Hence the correct answer is option 4. • The party was a splinter from the Motilal Nehru-led Swaraj Party, which was further split by the formation of the Independent Congress Party and the Nationalist Party. • Lala Lajpat Rai, N C Kelkar, Madan Mohan Malviya were the responsivity, who had the intention of cooperation with the Government and in 1926, non-responsivity like Motilal Nehru withdrew from legislatures. • By 1924, the Swarajists position had weakened and a split among themselves was observed on communal and Responsive-Non-responsive lines. • The Responsivists among Swarajists were led by Lala Lajpat Rai, Madan Mohan Malaviya and N.C. Kelkar advocated cooperation with the Government and holding of office wherever possible to protect the so-called Hindu interests. • They accused Non-responsivsts like Motilal Nehru of being anti-Hindu.