Read this sentence from paragraph 3: "Righteous indignation against racial discrimination became widespread after the march."
Which central idea from the passage is best developed by this detail?
A. Voting laws where changed after legislators heard King's remarks.
B. Outrage was a common public reaction to King's speech.
C. King's remarks where well received by listeners of all races.
D. King's speech had an extensive in changing public opinion.
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