The correct option is Sindh.
Explanation
The Great Indian Desert, also known as the Thar Desert, is located to the northwest of the Aravali Hills. It is characterized by an undulating topography with longitudinal dunes and barchans. The region's physiography is defined by specific slope orientations that influence local drainage patterns.
Physiographic Orientation:
Based on the orientation of the land slope, the Indian Desert is divided into two distinct sections:
- The Northern Part: This section slopes towards Sindh (Pakistan).
- The Southern Part: This section slopes towards the Rann of Kachchh.
This slope orientation dictates the flow of ephemeral streams in the region. For instance, the Luni river flows through the southern part of the desert and drains into the Rann of Kachchh, following the southern slope gradient.
Key Takeaway: The Indian Desert is physiographically divided based on slope direction: the northern section slopes towards Sindh, while the southern section slopes towards the Rann of Kachchh.