Explanation:

Here’s a brief explanation for each option:

- Option 1: Swami Dayanand Saraswati

- Founder of the Arya Samaj in 1875.

- Advocated for the return to the Vedas and reforming Hindu society.

- Option 2: Ram Singh

- Leader of the Namdhari (Kuka) movement in Punjab.

- Not associated with Brahmo Samaj.

- Option 3: Raja Ram Mohan Roy

- Founded the Brahmo Samaj in 1828, aimed at reforming socio-religious norms.

- Opposed sati and promoted education and women's rights.

- Option 4: HN Kunzru

- A political leader and social reformer in India.

- Not related to the Brahmo Samaj's founding.