Explanation:

- Sri Aurobindo: He was an Indian philosopher, yogi, and nationalist. He was a prominent figure in the Indian independence movement. His series of articles titled "New Lamps for Old" criticized the Congress's moderate approach towards British rule. He advocated for more radical action.

- Lala Lajpat Rai: A significant leader in the Indian independence movement, he was known for his advocacy of a more assertive approach against British rule but did not author "New Lamps for Old".

- Bipin Chandra Pal: He was one of the prominent leaders of the Indian nationalist movement and part of the Lal-Bal-Pal trio, but he did not write "New Lamps for Old".

- Bal Gangadhar Tilak: Another leader of the trio, known for his radical nationalist stand. While he strongly opposed British rule, he did not author the specific series of articles.

Answer: Sri Aurobindo – "New Lamps for Old" was indeed authored by Sri Aurobindo.