Solution:
The three main centres of the Indian National Congress Sessions were Lahore, Calcutta, Bombay.The Calcutta session of the INC was held in September 1920 under the presidency of Lala Lajpat Rai. This session was held to pass the resolution of the non-cooperation movement. The Lahore session on INC was held in December 1929, where the declaration ‘Poorna Swaraj’ resolution was passed. The INC session of Bombay was held in December 1885 under W.C. Bonnerjee. This was the session where the Indian National Congress was formed, and the first president of the Indian National Congress was W.C. Bonnerjee.
