Let's match the organizations with their founders/ leaders: A. Abhinava Bharat: Founded by V.D. Savarkar and his brother G.D. Savarkar. Match with 1 (V.D. Savarkar) or 2 (G.D. Savarkar). Option D maps A to 2 (G.D. Savarkar). B. Mitra Mela: Founded by V.D. Savarkar and G.D. Savarkar in 1899, it was the precursor to Abhinava Bharat. Match with 1 (V.D. Savarkar) or 2 (G.D. Savarkar). Option D maps B to 1 (V.D. Savarkar). C. Indian Republic Army: Formed by Surya Sen for the Chittagong armoury raid in 1930. Match with 4 (S. Sen, i.e., Surya Sen). Option D maps C to 4. D. Hindustan Republic Association (later HSRA): Founded by Sachindranath Sanyal, Jogesh Chandra Chatterjee, and Ram Prasad Bismil in 1924. Match with 3 (S.N. Sanyal). Option D maps D to 3. Option D provides a correct and consistent set of matches, assigning one founder to each organization where multiple were involved.