Correct Answer: (c) Lala Lajpat Rai
Solution:During the years 1920-21, the Indian National Movement entered a new phase of mass politics and mobilisation. Two mass movements, Khilafat and Non-Cooperation, were formed to oppose British rule. The Non-Cooperation Movement was launched by Mahatma Gandhi in 1920 to mobilise the Indian masses to peacefully resist British rule through non-cooperation with British institutions, laws, and policies. Both the Khilafat Movement and Mahatma Gandhi's Non-Cooperation Movement saw a convergence at the end of the summer of 1920. Congress, at its special session of Calcutta in September 1920, approved the Non-Cooperation movement, which was later endorsed by the Nagpur session of Congress in December 1920. The movement saw tremendous participation of masses throughout the country. However, the movement was called off by Gandhi on February 11, 1922, following the Churi Chaura incident in the Gorakhpur distrrict of Uttar Pradesh.