What was the main reason for calling off the Non-Cooperation Movement by Gandhiji in 1922?

Correct option is C

The main reason for calling off the Non-Cooperation Movement by Mahatma Gandhi in 1922 was A police station at ChauriChaura in Uttar Pradesh was set on fire by a mob
 The main reason for calling off the Non-Cooperation Movement by Mahatma Gandhi in 1922 was the ChauriChaura incident. In ChauriChaura, Uttar Pradesh, a group of protesters turned violent and set a police station on fire, resulting in the deaths of several police officers.
 This incident deeply troubled Gandhi, who believed in non-violent civil disobedience.
 He felt that the movement had taken a violent turn, which was contrary to its principles of non-violence.