The answer is A. Bomdila.
Bomdila is a town in the Indian state of Arunachal Pradesh. It is located in the West Kameng district, at an altitude of 2,450 meters (8,040 feet). Bomdila is a popular tourist destination, known for its scenic beauty and its proximity to the Himalayas.
Lhasa is the capital of the Tibet Autonomous Region of China. It is located in the Lhasa Valley, at an altitude of 3,490 meters (11,417 feet). Lhasa is a major religious and cultural center for Tibetan Buddhism.
Nathula is a mountain pass in the Himalayas, on the border between India and China. It is located at an altitude of 4,310 meters (14,140 feet). Nathula was opened to trade and tourism in 1992.
Shipkila is a mountain pass in the Himalayas, on the border between India and China. It is located at an altitude of 4,450 meters (14,600 feet). Shipkila was closed to trade and tourism in 1962, after the Sino-Indian War.
The word that is different from the rest is Bomdila. Bomdila is a town in India, while the other three options are mountain passes.