Detailed Solution:
The correct answer is “Civil disobedience movement”.
The Gandhi–Irwin Pact was a political agreement signed by Mahatma Gandhi and Lord Irwin, Viceroy of India, on 4 March 1931 before the Second Round Table Conference in London.
The second Round Table Conference was held in London from 7 September 1931 to 1 December 1931 with the participation of Gandhi and the Indian National Congress.
The agreement included provisions such as the suspension of the Civil Disobedience Movement and certain concessions by the British government, like the release of prisoners and the lifting of restrictions on salt production.