Answer : 3. "Western dry region"
Explanation :

1. The Godwar region is a part of the western sandy plain of Rajasthan. This state is located in the southwestern part of Rajasthan and extends from the western part of the Aravalli mountain range to the border of Pakistan. Godwad region mainly consists of sandy plains, desert and hilly areas.

2. Western Sandy Plains: The Western Sandy Plains is divided into two units.

  * sandy dry plains

- desert

- Dune Free Tract

* Semi-arid transitional plain (Rajasthan Bagar)

  - Luni Basin (Godwar Tract)

- Internal drainage area (Shekhawati Tract)

- Ghaggar plain