(A) 1969
(B) 1972
(C) 1971
(D) 1973
🧠 Explanation:
- Bangladesh separated from Pakistan after the 1971 Indo-Pak war.
- The official declaration of independence was made on 16 December 1971.
- This war led to the formation of the new country: Bangladesh.
- Option (C) is historically accurate and widely accepted.
