The Kailash Manasarovar Yatra, a sacred pilgrimage to Mount Kailash and Lake Manasarovar, primarily passes through the Lipulekh Pass. This pass is located in the Himalayas and serves as a traditional trade and pilgrimage route between India (Uttarakhand) and Tibet (China).
Niti Pass (option 2) and Muling La Pass (option 3) are also in the region but are not the main routes for this pilgrimage. Jelep La Pass (option 4) is in Sikkim and is unrelated to this yatra.
Therefore, the correct answer is (1) Lipulekh pass.