CORRECT answer is Lahore Session of Congress, 1929. The Indian National Congress, on 19 December 1929, passed the historic ‘Poorna Swaraj’ – (total independence) resolution – at its Lahore session.Jawaharlal Nehru was elected as President of the Indian National Congress in December 1929 at its annual session in the city of Lahore.A public declaration was made on 26 January 1930 – a day which the Congress Party urged Indians to celebrate as ‘Independence Day.The Indian National Congress (INC) was formed by Allan Octavian Hume in 1885.The first session of INC was held in Bombay from 28–31 December 1885 under the chairmanship of W.C. Bannerjee.Sessions of Indian National Congress before Independence:YearPlacePresident and fact1885, 1882Bombay, AllahabadWomesh Chandra Bannerjee1916LucknowA.C Majumdar (Re-union of the Congress)1919AmritsarMotilal Nehru1922GayaC R Das1928CalcuttaMotilal Nehru and All INDIA YOUTH Congress formed.1939TripuraS.C.Bose was re-elected but had to resign due to PROTESTS by Gandhiji (as Gandhiji SUPPORTED Dr. Pattabhi Sitaramayya). Rajendra Prasad was appointed in his place.1948JaipurDr. Pattabhi Sitaramayya (Last session)