Which Pakistani city is geographically closest to Afghanistan?

Peshawar is the correct answer because it is located in the Khyber Pakhtunkhwa province of Pakistan, which shares a direct border with Afghanistan. This city serves as a significant cultural and economic hub and is only a short distance from the Afghan border, making it the closest major city in Pakistan to Afghanistan.

In contrast, Islamabad, while the capital city of Pakistan, is situated much further south and east, away from the border region. Karachi is the largest city in Pakistan but is located on the southern coast, far from the northern border with Afghanistan. Lahore, although a major city, is located east of Islamabad and also significantly distanced from the border with Afghanistan. Therefore, Peshawar's geographical position in relation to the Afghan border solidifies its status as the closest Pakistani city to Afghanistan.