Correct Answer: 1921

Solution : The correct option is 1921.

On January 1st, 1921, the Non-Cooperation Movement was launched in India. Under the direction of Mahatma Gandhi, the Indian National Congress started a substantial campaign of civil disobedience against British colonial power. Through peaceful measures, including as the boycott of British products, institutions, and government operations, the movement sought to challenge British rule. The Non-Cooperation Movement was essential in empowering the Indian people to resist colonial rule and drive their nation toward independence.