Which one of the following aroused a wave of popular indignation that led to the massacre by the British at Jallianwala Bagh?

The Rowlatt Act of 1919 allowed the British government to imprison people without trial or a search warrant for up to two years. This act was seen as a major violation of civil liberties and led to widespread protests across India. In Amritsar, the arrest of popular leaders Dr. Saifuddin Kitchlew and Dr. Satyapal under this act triggered massive public outrage. A peaceful crowd gathered at Jallianwala Bagh on April 13, 1919, to protest these arrests and the Rowlatt Act, which ultimately led to the tragic massacre ordered by General Dyer. Therefore, the Rowlatt Act was the direct cause of the indignation leading to the event.