The correct answer is (b). The Rowlatt Act was an act passed by the British Indian government on 18 March 1919. The act gave the government the power to detain people without trial and to suppress any public gatherings. The act was widely seen as a violation of civil liberties and led to widespread protests. The Jallianwala Bagh massacre was one of the most infamous incidents of the protests. On 13 April 1919, British Indian Army General Reginald Dyer ordered his troops to fire on a crowd of unarmed protesters in Jallianwala Bagh, Amritsar, Punjab. The massacre resulted in the deaths of at least 379 people, including women and children.
The other options are incorrect. The Non-Cooperation Movement was a major political movement in India that was launched in 1920 by Mahatma Gandhi. The movement was a protest against the British government’s policies in India. The Communal Award was a proposal made by the British government in 1932 to divide India into separate Hindu and Muslim states. The Arrival of Simon Commission was the arrival of a commission of British MPs in India in 1928 to investigate the possibility of granting India self-government.