Whom did Bal Gangadhar Tilak refer to as his Political Guru?

Answer: Option D

Bal Gangadhar Tilak, a prominent leader in the Indian independence movement, referred to Dadabhai Naoroji as his Political Guru. Naoroji, often known as the Grand Old Man of India, was a key figure in the early years of the Indian National Congress. He played a crucial role in shaping the ideological and political framework of the Indian nationalist movement. His emphasis on economic critique of British rule and advocacy for self-rule influenced many later leaders, including Tilak.