The correct answer is: D. Western part
The western part of Haryana remains dry because it is located in the Thar Desert. The Thar Desert is a hot desert located in the northwestern part of India and eastern part of Pakistan. It is the largest hot desert in Asia and the 17th largest hot desert in the world. The Thar Desert is a semi-arid region with an average annual rainfall of 150-200 mm. The western part of Haryana is located in the rain shadow of the Aravalli Range, which means that it receives very little rainfall. This lack of rainfall, combined with the high temperatures, makes the western part of Haryana a very dry and arid region.
The eastern part of Haryana is located in the Gangetic Plain, which is a fertile region with a high rainfall. The southern part of Haryana is also located in the Gangetic Plain, but it is not as fertile as the eastern part. The northern part of Haryana is located in the Shivalik Hills, which are a mountain range. The Shivalik Hills receive more rainfall than the rest of Haryana, but they are not as fertile as the Gangetic Plain.
The western part of Haryana is the driest part of the state. It is located in the Thar Desert, which is a hot desert with an average annual rainfall of 150-200 mm. The western part of Haryana is also located in the rain shadow of the Aravalli Range, which means that it receives very little rainfall. This lack of rainfall, combined with the high temperatures, makes the western part of Haryana a very dry and arid region.