Explanation:

- Mahadev Govind Ranade: He was an Indian scholar and social reformer but did not found the Arya Samaj.

- Ram Mohan Roy: A prominent social reformer who founded the Brahmo Samaj, not the Arya Samaj.

- Keshab Chandra Sen: Known as a notable leader in the Brahmo Samaj movement, not linked to the Arya Samaj.

- Dayanand Saraswati: He was a Hindu religious leader and social reformer who founded the Arya Samaj in 1875. His movement promoted values based on the Vedas and sought to reform Hindu society.

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