The correct option is C people resorted to violence in Chauri Chaura
The movement was in full swing when in Chauri Chaura, Gorakhpur, the police fired upon a procession of 3,300 peasants. The angry crowd set the police station on fire, killing 22 policemen. Gandhiji had always emphasised that the entire movement should be non-violent and peaceful. After this incident, he called off the movement unilaterally in 1922.