Answer: B. The Cultural Revolution
Explanation:
Mao Zedong who was the leading communist in China had been losing support in the Chinese Communist party and so was losing power and influence as well. In response he called for the Cultural Revolution where he told young people that dissenters in the party were trying to restore capitalism.
Chinese youth and urban workers responded to his calls and attacked perceived dissenters, had them exiled, executed, sent to labor camps and imprisoned. It is estimated that millions died but the true figure might never be known.