Explanation:

- Gopal Krishana Gokhale: He was a leading figure among the moderates in the Indian National Congress. Gokhale believed in gradual reform and dialogue with the British authorities.

- M.G. Ranade: Also a moderate leader, Ranade emphasized social and economic reform through education and rational thinking. He was a founder member of the Congress and influenced other leaders.

- Aurobindo Ghosh: Initially, Aurobindo was involved in the nationalist movement, but he was more radical in his approach compared to moderates. His later life was dedicated to spiritual pursuits in Pondicherry.

- Surendra Nath Banerji: As a moderate leader, he was known for advocating constitutional methods and reform through deliberation and concession.

Correct Answer: Option 3: Aurobindo Ghosh