Correct option is A
The correct answer is (a) Afghanistan-Pakistan.
· The Durand Line is the international border between Afghanistan and Pakistan, established in 1893. It was drawn by Sir Mortimer Durand, the foreign secretary of British India, to delineate the spheres of influence between British India and Afghanistan.
Information Booster:
· The Durand Line is approximately 2,640 kilometers (1,640 miles) long.
· It has been a contentious issue between Afghanistan and Pakistan, as Afghanistan does not officially recognize this border.
· The line divides the Pashtun ethnic group, leading to political and social tensions in the region.