Creation of physical capital creates private benefit (3). On-the-job training enhances labor productivity (1). Education provides better social standing and pride (4). Human capital formation creates private and social benefit (2). Hence A-III, B-I, C-IV, D-II.
Note: The NTA question lists pairs with numerals 1-4 in both columns but the options use I-IV Roman numerals. We have matched them consistently by position.