The trial of the Officers of the I.N.A was held in

The correct answer is A) Red Fort, Delhi. The first INA trial, of Shah Nawaz Khan, Prem Sahgal and Gurbaksh Singh Dhillon, opened at the Red Fort in November 1945 before a British General Court Martial. The Red Fort trials became a national issue, with Bhulabhai Desai, Jawaharlal Nehru and others appearing for the defence, and they helped turn INA veterans into popular heroes.

• Gwalior Fort is wrong. It was better known as a state prison and has no link to the INA courts-martial.
• Amer Fort, Jaipur is wrong. It was the seat of the Kachhwaha rulers, not a colonial military court venue.
• Agra Fort is wrong. It is a Mughal monument, famous for its association with Shah Jahan, and was not used for the INA trials.

The core concept is the INA trials of 1945-46, which fed into the Royal Indian Navy mutiny of February 1946 and pushed Britain toward accelerating its exit from India. For Mains, this is a good example of how wartime military actions shaped the freedom struggle and mass politics.

Trap: Aspirants often pick a Mughal or Rajput fort because the other options look like historical monuments. Remember that the Red Fort was the site of colonial trials, not just a Mughal palace.