It was NOT the outcome of 'Gandhi-Irwin Pact':

Radical nationalists supported the pact.

The correct answer is Option (2) → Radical nationalists supported the pact.

Option 1- Civil disobedience would be called off.
Option 2- Radical nationalists supported the pact. (INCORRECT)
Option 3- All prisoners were released.
Option 4- Salt manufacture allowed along the coast.

The British government convened a series of “Round Table Conferences” in London. The first meeting was held in November 1930, but without the pre-eminent political leader in India, thus rendering it an exercise in futility. Gandhiji was released from jail in January 1931 and the following month had several long meetings with the Viceroy. These culminated in what was called the “Gandhi-Irwin Pact’, by the terms of which civil disobedience would be called off, all prisoners released, and salt manufacture allowed along the coast. The pact was criticised by radical nationalists, for Gandhiji was unable to obtain from the Viceroy a commitment to political independence for Indians; he could obtain merely an assurance of talks towards that possible end.