URGENT ANSWER ASAP How did Joseph Stalin maintain power in the Soviet Union during the Great Terror?

through the support of the higher officers of the Red Army
through a combination of fear and massive propaganda
through Stalin's support for democratic reforms
through Stalin's effort to turn the Soviet Union into an industrial power

He served as the General Secretary of the Central Committee of the Communist Party of the Soviet Union from 1922 until his death in 1953. In the years following the death of Vladimir Lenin, he rose to become dictator of the Soviet Union, using a combination of manipulation and terror to destroy his opposition.

Explanation:

Hope it's answer you plz mark as Brainlist