Explanation:

- The correct answer is Option: None of the provided dates are perfectly accurate. The Bangladesh Liberation War officially ended on 16th December 1971.

- Option 1 (14th November 1972): ? Not relevant. This date is almost a year after the war ended and not associated with the war's conclusion.

- Option 2 (15th December 1971): ? Close, but not precise. The war actually ended the next day, on 16th December 1971, when the Pakistani army surrendered.

- Option 3 (17th October 1971): ? Incorrect. The war was ongoing at this time.

- Option 4 (2nd October 1974): ? Incorrect. This is nearly three years after the end of the war.

Correct Option: None of the above (but Option 2 is closest).