Explanation: Sikkim is a small state in northeastern India, known for its rich biodiversity and stunning mountain landscapes. The state is bordered by Nepal to the west, Bhutan to the east, and the Indian state of West Bengal to the south. The northern border of Sikkim is marked by the Tibetan Plateau.
The Singalila Range is a significant geographical feature that separates Sikkim from Nepal. This range is part of the larger Himalayan mountain system and is characterized by its high peaks and dense forests. The Singalila Range is not only a natural boundary but also a popular destination for trekkers and nature enthusiasts. The range includes the famous Sandakphu peak, which offers panoramic views of the Himalayan range, including Mount Kanchenjunga, the third-highest peak in the world.
The Dongkya Range, on the other hand, is located in the eastern part of Sikkim and does not form the border with Nepal. It is a less prominent range compared to the Singalila Range and is not as well-known for its trekking routes or scenic beauty.
Understanding the geographical features of Sikkim is crucial for comprehending the state's unique position within the Himalayan region. The Singalila Range plays a significant role in defining the border between Sikkim and Nepal, and it is an important landmark for both geographical and cultural reasons. The range not only serves as a natural boundary but also as a symbol of the rich biodiversity and natural beauty of the region.
In summary, the Singalila Range is the correct answer because it is the specific mountain range that separates Sikkim from Nepal in the west. This range is a key geographical feature that defines the border and is an important part of the region's natural and cultural landscape.