Question

why did Gandhiji decided to withdraw non cooperation movement

Answer 1

ot was due to a mob of revolutionaries(indians) attacked on a police station and burned 22 policemen with the police station.
As this was a violent method which was totally unliked by gandhiji because gandhiji believed in non-violence satyagraha.
so he called-off the movement.

It is correct answer.

Answer 2

Gandhiji decided to withdraw non cooperation movement because of the following reasons:-

1) The incident had became violent in some parts such as in Chauri Chaura.

2) Gandhiji thought that the Satyagrahis needed more training before any mass movement.

3)The Congress leaders were tired of the movements and struggles and wanted to participate in the legislative elections of 1919.