Correct Answer: (b) Ghanshyam Das Birla
Solution:After Poona Pact, 1932, Mahatma Gandhi was not actively involved in Civil Disobedience Movement but now he took an interest in anti-untouchability movements and "All India Anti-Untouchability League" was founded by Mahatma Gandhi in 1932 whose name was later changed to "Harijan Sevak Sangh." Ghanshyam Das Birla was the first President of this institution.