Which movement was withdrawn by Gandhiji after a group of peasants attacked and torched a police station in the hamlet of Chauri Chaura (United Provinces)?

The correct option is Non-Cooperation Movement.

Step-by-step Explanation:

1. Context of the Non-Cooperation Movement:
The Non-Cooperation Movement was launched by Mahatma Gandhi in September 1920 with the aim of obtaining self-governance (Swaraj) and resisting British rule in India. The fundamental pillar of this nationwide movement was absolute non-violence (Ahimsa) and peaceful resistance.

2. The Chauri Chaura Incident:
On February 4, 1922, a clash occurred at Chauri Chaura, a hamlet in the Gorakhpur district of the United Provinces (modern-day Uttar Pradesh). A group of demonstrators participating in the Non-Cooperation Movement clashed with local police, who opened fire on the crowd. In response, the angered peasants attacked and set fire to the local police station, leading to the deaths of 22 policemen who were trapped inside.

3. Withdrawal of the Movement:
Mahatma Gandhi was deeply shocked by this outbreak of violence, which went directly against his core principles of Satyagraha. Believing that the country was not yet ready for a completely non-violent struggle, Gandhiji decided to call off the Non-Cooperation Movement on February 12, 1922, following the Bardoli resolution.