Correct answer: (b) Bal Gangadhar Tilak
Explanation
- A
Lala Lajpat Rai
(a) Lala Lajpat Rai. Rai presided over the special Calcutta Congress session in 1920. He did chair a session.
- B
Bal Gangadhar Tilak
(b) Bal Gangadhar Tilak. Tilak was a foremost extremist leader and Home Rule campaigner but never occupied the Congress presidential chair. That ‘never presided’ fact is the official key.
- C
Gopal Krishna Gokhale
(c) Gopal Krishna Gokhale. Gokhale presided at Benares in 1905.
- D
Subhash Chandra Bose
(d) Subhash Chandra Bose. Bose presided at Haripura (1938) and Tripuri (1939).
Summary. Official key is (b) Bal Gangadhar Tilak. Among the four, only Tilak never served as Congress President. Lajpat Rai’s 1920 special session, Gokhale’s 1905 Benares session and Bose’s 1938–39 sessions are on the record. Neighbouring never-president trivia should not overwrite those three names. Tilak’s 1916 Lucknow pact role was as a leader, not as session president.