Explanation:

Dr. Bhim Rao Ambedkar, a towering figure in Indian history and the chief architect of the Indian Constitution, established the **Independent Labour Party (ILP)** in August 1936. His primary objective was to represent the interests of the Depressed Classes, workers, and peasants, advocating for their social, economic, and political rights within the legislative framework. The ILP contested the provincial elections of 1937 and achieved significant success in Bombay and the Central Provinces. Option A is correct because the ILP was indeed founded by Ambedkar to champion the cause of the marginalized. Option B, The Peasants and Workers Party of India, was founded in 1947 by a group of leaders from Maharashtra, distinct from Ambedkar's ILP. Option C, Labour Swaraj Party, was formed in 1925 by leaders like Muzaffar Ahmed and Kazi Nazrul Islam, focusing on socialist ideals and workers' rights, but not founded by Ambedkar. Option D, Hindustan Socialist Republican Association (HSRA), was a revolutionary organization founded in 1928 by Chandrashekhar Azad, Bhagat Singh, and others, focusing on armed struggle, which is entirely different from Ambedkar's political approach.