The correct answer is: d) North Sikkim.
Gurudongmar Lake is a high-altitude lake located in the North Sikkim district of Sikkim, India. It is the second highest lake in India, after Tso Moriri. The lake is situated at an elevation of 17,800 feet (5,430 m) above sea level and is surrounded by snow-capped mountains. The lake is a popular tourist destination and is known for its scenic beauty.
The lake is fed by glaciers and snowmelt from the surrounding mountains. The water in the lake is crystal clear and is said to be very pure. The lake is home to a variety of fish and other aquatic life. The lake is also a popular spot for bird watching.
The lake is located in a remote area and is accessible only by trekking or by helicopter. The best time to visit the lake is during the summer months (June-September).
The other options are incorrect because:
- Option (a), West Sikkim, is incorrect because Gurudongmar Lake is not located in West Sikkim.
- Option (b), East Sikkim, is incorrect because Gurudongmar Lake is not located in East Sikkim.
- Option (c), South Sikkim, is incorrect because Gurudongmar Lake is not located in South Sikkim.