Which of the sentences from the introduction [paragraphs 1-7] BEST develops a central idea of the article ¨What Black Lives Matter demonstrators can learn from civil rights protests of the past¨.

Group of answer choices

A. Instead, most successful civil rights demonstrations create change in stages and build on previous demonstrations.

B. Shahid Buttar is a Black Lives Matter activist and Democrat who has run for Congress several times.

C. Institutional racism is a part of society's culture, policies and systems that unfairly targets people of color.

D. The U.S. has a long history of protests and uprisings, starting with the Boston Tea Party's rebellion against British rule.