To arrange the important National Days of India in chronological order, we need to know the specific dates on which each day is celebrated. Here are the relevant details:
We now arrange these days in the order of their occurrence throughout the year:
Thus, the correct chronological sequence is: (C) National Youth Day, (B) National Teacher's Day, (A) National Science Day, (Ε) National Children's Day, and (D) National Hindi Day, which matches the option: