Explanation: Sikkim, a state in northeastern India, is known for its diverse geography and infrastructure. Among its notable landmarks are several bridges that span its rivers and valleys. The Singshore Bridge is the highest bridge in Sikkim, located in the West Sikkim district. It is an important part of the state's transportation network and a significant engineering feat.
The Singshore Bridge spans the Teesta River, which is a major river in Sikkim. The bridge is located in the town of Singshore, which is a strategic point in the state due to its proximity to the border with Nepal. The bridge's height and location make it a crucial link in the transportation network, facilitating travel and commerce in the region.
The other options provided in the question are incorrect for the following reasons:
- Khechopalri is a sacred lake in West Sikkim, known for its religious significance and natural beauty, but it is not a bridge.
- Thangu is a valley in Sikkim, and while it has a bridge, it is not the highest bridge in the state. The Thangu Bridge is located in the Thangu Valley and is significant for its location, but it does not hold the record for the highest bridge in Sikkim.
- Zemu Glacier is a significant glacier in Sikkim, located in the Khangchendzonga National Park. It is a major source of the Teesta River and an important geographical feature, but it is not a bridge and does not relate to the question of the highest bridge in Sikkim.
Understanding the geographical context of Sikkim's infrastructure is crucial for identifying the correct answer. The Singshore Bridge stands out as the highest bridge in Sikkim due to its strategic location and engineering significance.