Concept:The Indian National Congress was founded in 1885 as the first all-India political organization.
Explanation:The first session of the Indian National Congress was held from December 28 to December 31, 1885.
It took place at the Gokuldas Tejpal Sanskrit College in Bombay, which is now known as Mumbai.
The session was presided over by Womesh Chandra Bonnerjee, a Calcutta barrister, who became the first president of the Congress.
About 72 delegates, including lawyers, journalists, and reformers from different parts of British India, attended the meeting.
A. O. Hume, a retired British civil servant, played a key role in organizing the Congress and served as its first General Secretary.
The venue was originally fixed as Poona, but it was shifted to Bombay because of a cholera outbreak in Poona.
The Congress was established during the viceroyalty of Lord Dufferin.
This early phase is known as the Moderate Phase, focusing on constitutional methods and petitions.
Thus, the first session of the INC took place on December 28, 1885, in Bombay.
Answer:December 28, 1885, Bombay — Option C.