Answer:
The correct answer is A. The Red Guard were a group of militant university and high school students formed into paramilitary units to help Mao combat his enemies.
Step-by-step explanation:
The Red Guards were a mass movement, composed mostly of university students and high school students in China, who were mobilized by Mao Zedong between 1966 and 1967, during the Cultural Revolution, against the elitist elements of society.
The Red Guards were the authors of terrible excesses, which ranged from the systematic destruction of heritage to public humiliation, confinement in "reeducation camps" and, in some cases, the execution of intellectuals.