Correct Answer: 10 years

Solution : The correct answer is (c). 10 years

The Cultural Revolution was a period of political and social upheaval in China that was launched by Mao Zedong, the chairman of the Chinese Communist Party. Mao's goal was to revitalize the Chinese revolution and purge the party of his opponents. The Cultural Revolution was a time of great violence and chaos, and it is estimated that millions of people were killed or imprisoned.

The Cultural Revolution officially ended with Mao's death in 1976, but its legacy continues to be debated today. Some people believe that the Cultural Revolution was a necessary period of upheaval that helped to preserve Chinese communism, while others believe that it was a time of great suffering and destruction.