The correct answer is: b) East Khasi Hills.
The Umngot River is a river in the East Khasi Hills district of Meghalaya, India. It is known for its crystal-clear water and is a popular tourist destination. The river is about 50 kilometers long and flows from the Khasi Hills to the Brahmaputra River. It is a tributary of the Brahmaputra River.
The Umngot River is a popular destination for swimming, fishing, and boating. It is also a popular spot for bird watching. The river is home to a variety of birds, including kingfishers, herons, and ducks.
The Umngot River is a beautiful and serene river. It is a great place to relax and enjoy the natural beauty of Meghalaya.
The other options are incorrect because:
- West Garo Hills is a district in Meghalaya, India. It is located in the western part of the state. The district is home to the Garo people.
- South Garo Hills is a district in Meghalaya, India. It is located in the southern part of the state. The district is home to the Garo people.
- Ri-Bhoi is a district in Meghalaya, India. It is located in the central part of the state. The district is home to the Khasi people.