National Youth Day is observed on 12 January (Swami Vivekananda's birthday). Army Day is on 15 January. National Science Day is on 28 February. National Safety Day is on 4 March. Matching yields 1-II, 2-III, 3-I, 4-IV.
Note: List-II shows '15th March' for option III, but Army Day is observed on 15 January; we have used the answer key's intended pairing.