The correct answer is - Stalin used intimidation and fear, while Gandhi used civil disobedience.
Stalin and Gandhi had totally different methods of achieving their goals to make changes in their respective countries.
Stalin used intimidation, fear, and elimination of everyone he saw as opponent, critic, or was just not suitable for the society in his eyes. He was a textbook brutal dictator.
Gandhi was encouraging civil disobedience, but without using violence. He was promoting peace and love, and was not interested in bloodshed. Gandhi was a person that used peaceful disobedience to achieve changes in India.