The correct answer is (a) Arya Samaj.
The Arya Samaj was a Hindu reform movement founded in 1875 by Swami Dayananda Saraswati. The movement’s goal was to revive and reform Hinduism by returning to the Vedic scriptures. The Arya Samaj supported the Suddhi movement, which was an effort to reconvert Hindus who had converted to other religions, such as Christianity and Islam.
The Brahma Samaj was a Hindu reform movement founded in 1828 by Raja Ram Mohan Roy. The movement’s goal was to reform Hinduism by removing its social and religious evils. The Brahma Samaj did not support the Suddhi movement.
The Deva Samaj was a Hindu reform movement founded in 1878 by Shiv Narayan Agnihotri. The movement’s goal was to reform Hinduism by returning to the Vedic scriptures. The Deva Samaj did not support the Suddhi movement.
The Prarthana Samaj was a Hindu reform movement founded in 1867 by Mahadev Govind Ranade. The movement’s goal was to reform Hinduism by removing its social and religious evils. The Prarthana Samaj did not support the Suddhi movement.