The correct answer is (d).
Gandhiji’s Champaran Movement was a peasant uprising in the Champaran district of Bihar, India, led by Mahatma Gandhi in 1917. The movement was against the British indigo plantation system, which was exploitative and oppressive to the local peasants. Gandhiji’s nonviolent methods of protest, such as civil disobedience and non-cooperation, were successful in bringing about change in the indigo plantation system.
The other options are incorrect.
(a) The Security of the rights of Harijans: Gandhiji was a strong advocate for the rights of Harijans, also known as Dalits, who were the lowest caste in Indian society. However, the Champaran Movement was not specifically about the rights of Harijans.
(b) Civil Disobedience Movement: The Civil Disobedience Movement was a major nonviolent protest movement led by Gandhiji in India in the 1930s. The movement was against British rule in India. The Champaran Movement was not part of the Civil Disobedience Movement.
(c) Maintaining of unity of Hindu Society: Gandhiji was a strong advocate for Hindu-Muslim unity. However, the Champaran Movement was not specifically about maintaining the unity of Hindu society.