The correct answer is option 1: "Its taking violent turn".

During the Non-Cooperation Movement initiated by Mahatma Gandhi in 1920, the goal was to peacefully resist British colonial rule in India. However, the movement started to take a violent turn, with incidents of arson, attacks on police stations, and clashes with authorities. Gandhi believed in non-violence and felt that the movement had deviated from its original principles.

The violence caused by the movement was not in line with Gandhi`s philosophy of peaceful protest and non-violent resistance. He was concerned that the movement could escalate further and lead to unnecessary loss of life and destabilization. Therefore, he made the decision to suspend the Non-Cooperation Movement in February 1922.

It is important to note that Gandhi`s decision was not due to a lack of public support or the disapproval of Congress, as mentioned in options 2 and 3. The movement had garnered significant support from the Indian population and Congress was actively involved in organizing and leading the movement.

Regarding option 4, Gandhi`s ill health was not the reason for suspending the movement. While it is true that Gandhi`s health suffered during various periods of his life, in this particular case, the suspension was a result