Correct option is B
Correct Answer: (B) Ladakh
Khardung La Pass is situated in the Union Territory of Ladakh, near Leh.
It is a strategic mountain pass that provides access to the Nubra and Shyok valleys and is vital for military supplies to the Siachen Glacier.
Khardung La lies at an altitude of around 5,359 meters (17,582 feet).
It was once considered the highest motorable road in the world, although other passes have since surpassed it in altitude.
(A) Sikkim: Known for passes like Nathu La and Jelep La, but not Khardung La.
(C) Himachal Pradesh: Home to Rohtang Pass and Baralacha La, but not Khardung La.
(D) Jammu and Kashmir: Earlier part of J&K, but after bifurcation in 2019, Khardung La is now part of Ladakh.