The correct answer is option 4: Release of political prisoners excepting those guilty of arson and violence.

Let`s dissect the other options to understand why they are not part of the Gandhi-Irwin Agreement of 1931:

Option 1: Stem action against policemen guilty of brutal assault on Satyagrahis - While this may have been a demand made by Mahatma Gandhi during the negotiations, it was not specifically included in the Gandhi-Irwin Agreement. The agreement focused primarily on the release of political prisoners.

Option 2: Nehru to represent Congress at the Round Table Conference of 1931 - This was not part of the Gandhi-Irwin Agreement. Nehru`s role in representing the Congress at the Round Table Conference was a separate matter and not directly related to the agreement.

Option 3: Deletion of communal question from the agenda of the Conference - This demand was not specifically addressed in the Gandhi-Irwin Agreement. The agreement primarily focused on the release of political prisoners and related matters.

Alert - correct answer should be 3: Deletion of communal question from the agenda of the Conference. This was a critical demand made by Mahatma Gandhi, and it was included in the Gandhi-Irwin Agreement. The British government agreed to