Explanation: The Leh district, located in the northern part of Jammu and Kashmir, is a region of immense geographical significance due to the presence of multiple river valleys. The Indus, Shyok, and Nubra river valleys are all found within this district, each contributing to the unique landscape and ecological diversity of the area.
The Indus river valley is one of the most prominent features of the Leh district. The Indus river, one of the major rivers in South Asia, flows through this valley, which is characterized by its fertile soil and agricultural importance. The valley is also significant for its historical and cultural sites, including ancient monasteries and archaeological remains.
The Shyok river valley is another important geographical feature within the Leh district. The Shyok river is a major tributary of the Indus and forms a valley that is known for its rugged terrain and scenic beauty. The valley is also home to several important towns and villages, and it plays a crucial role in the region's economy and ecology.
The Nubra river valley, formed by the Nubra river, which is a tributary of the Shyok, is another significant geographical feature within the Leh district. The Nubra valley is known for its unique landscape, including the Nubra river itself, which flows through a narrow gorge and is surrounded by high mountains. The valley is also home to several important towns and villages, and it is a popular destination for tourists due to its natural beauty and cultural significance.
In summary, the Leh district contains the Indus, Shyok, and Nubra river valleys, making it a region of significant geographical and ecological importance. Each of these valleys contributes to the unique landscape and cultural heritage of the district, and they are all important features that define the geography of the Leh district. Therefore, the correct answer is (D) All of the above.