Where was the 1912 session of the India National Congress held in Bihar?

Correct — D. The 1912 session of the Indian National Congress met at Bankipore, a locality of Patna.

The timing is the memory hook. The province of Bihar and Orissa was carved out of Bengal in 1912 and Patna became its capital in the same year, so the Congress met in a city that had just been raised in status.

That fixes option (d).

Why the others are wrong

• (a)
  Sahasaram — Sahasaram (Sasaram, in Rohtas district) is known for Sher Shah Suri's tomb, not for a Congress session.
• (b)
  Gaya — Gaya did host a Congress session, but the 1922 one, presided over by C. R. Das. The stem asks for 1912.
• (c)
  Madhubani — Madhubani in north Bihar is known for its painting tradition, and it is not a Congress venue.

Congress sessions are asked as a year, place and president triple, and the ones that get asked are the ones that mark a turn.

Bankipore 1912 is asked mainly for the place. The Gaya session of 1922, also in Bihar, is asked for its content: C. R. Das presided, and the quarrel over whether to enter the new legislative councils came out of it, producing the Swaraj Party in 1923.

Key facts

• The 1912 session of the Indian National Congress was held at Bankipore, Patna.
• The province of Bihar and Orissa was created in 1912, with Patna as its capital.
• The 1922 Congress session at Gaya was presided over by C. R. Das.
• The Swaraj Party was founded in 1923 by C. R. Das and Motilal Nehru.

Common traps

• Choosing Gaya, which is a genuine Bihar venue but for 1922.
• Discarding Bankipore because the name is unfamiliar as a modern city.

No directly related past PYQ was found.