Correct Answer:
B. 31 August 2021
The correct answer is 31 August 2021. The United States officially completed its military withdrawal from Afghanistan on this date, marking the conclusion of a two-decade-long military presence in the country. This withdrawal represented the end of the longest war in U.S. history and occurred amid the rapid takeover of Afghanistan by the Taliban. The deadline was a firm commitment set by President Joe Biden, which necessitated extensive evacuation efforts in the weeks leading up to the final departure.
- Option A, 31 July 2021, is incorrect. While the withdrawal process was well underway and accelerating in July, the final departure did not happen until the end of the following month. Significant military personnel and evacuation operations were still active throughout July and into August.
- Option C, 1 September 2021, is incorrect. The withdrawal was definitively completed on August 31st. No U.S. military presence related to the withdrawal extended into September, making this date inaccurate for the completion of the mission.
- Option D, 5 September 2021, is incorrect. As the U.S. military mission concluded on August 31st, any date beyond that for the withdrawal's completion is factually incorrect. The specified deadline was strictly adhered to.