Subsequent to which one of the following events, Gandhiji, who consistently opposed untouchability and appealed for its eradication from all spheres, decided to include the upliftment of 'Harijans' in his political and social programme?

Subsequent to which one of the following events, Gandhiji, who…

Answer

(a) The Poona Pact — After the 1932 Poona Pact, Gandhi gave major emphasis to the removal of untouchability and launched organised work for the uplift of the so-called 'Harijans' through the Harijan Sevak Sangh and his journal Harijan. Correct.
(b) The Gandhi-Irwin Agreement (Delhi Pact) — This 1931 pact was about the Civil Disobedience Movement and political concessions; it was not the trigger for Gandhi formally incorporating Harijan uplift into his programme. Incorrect.
(c) Arrest of Congress leadership at the time of the Quit India Movement — Quit India began in 1942, much later; Gandhi's anti-untouchability campaign had already been central since 1932. Incorrect.
(d) Promulgation of the Government of India Act, 1935 — The 1935 Act dealt with constitutional reforms, not the point at which Gandhi adopted Harijan uplift as a major programme. Incorrect.