Explanation:

"Parakram Diwas" is celebrated to honor the valor and contributions of an important historical figure in India's freedom struggle:

- Option 1: 23 January - This day has been declared "Parakram Diwas" to commemorate the birth anniversary of Netaji Subhas Chandra Bose, acknowledging his courage and sacrifice for India's independence. Correct Answer

- Option 2: 14 April - Celebrated as Dr. B.R. Ambedkar's birthday, known as Ambedkar Jayanti.

- Option 3: 28 May - Not associated with "Parakram Diwas."

- Option 4: 25 December - Celebrated as Christmas, not linked to this observance.