In 1989,a Large Number of People in China Rose Up

In 1989,a large number of people in China rose up to protest the lack of democratic process in Tiananmen Square,an event that was brutally repressed by the government and widely reported around the world.When they did this,they were

A) protesting the social norm.
B) rioting to effect change.
C) demonstrating to challenge authority.
D) expressing agency.