Which of the following organisations was not established by B. R. Ambedkar?

Correct answer: Zero Club

Explanation: The correct answer is A. Zero Club. Dr. B. R. Ambedkar, the chief architect of the Indian Constitution and a strong advocate for social justice, founded several organisations to uplift the depressed classes and promote education among them. Some of the notable organisations he established include: Depressed Classes Institute (also known as Bahishkrit Hitakarini Sabha) in 1924, to promote the social, economic, and educational well-being of the Dalits. Samaj Samata Sangh, founded in 1927, aimed at promoting social equality and fighting caste discrimination. People’s Education Society, established in 1945, with the goal of spreading modern and scientific education among the underprivileged sections of society. However, 'Zero Club' was not among the organisations founded by Ambedkar.