Option 1 -> Nepal is located in the southern part of the Himalayas, far from Ladakh's location in the north. Hence, the correct answer.
Option 2 -> Ladakh shares its western border with Pakistan, specifically touching the Chitral and Kohistan districts of Khyber Pakhtunkhwa.
Option 3 -> Ladakh shares its eastern border with China (Tibet and Xinjiang) along the Line of Actual Control (LAC).
Option 4 -> Ladakh shares a small border with Afghanistan through the Wakhan Corridor in the northwest.