Explanation: Rajasthan, located in the northwestern part of India, is renowned for its desert climate and arid conditions. The state is characterized by vast stretches of sand, particularly in the western part, which includes the Thar Desert. The Thar Desert, also known as the Great Indian Desert, is the world's 19th largest subtropical desert and covers a significant portion of Rajasthan. The presence of sand is a defining characteristic of Rajasthan's landscape, contributing to its unique geographical features.
Rajasthan's climate is predominantly dry, with very little rainfall. The state receives an average annual rainfall of around 600 mm, which is significantly lower than the national average. This low rainfall is a result of the state's arid and semi-arid climate. The region's climate is influenced by its location, which is far from the sea, and its topography, which includes the Aravalli Range, a major mountain range that acts as a barrier to the monsoon winds. As a result, most parts of Rajasthan receive less than 600 mm of rainfall annually, with some areas receiving as little as 100 mm.
The combination of vast stretches of sand and very little rainfall makes Rajasthan one of the driest regions in India. This arid climate has significant implications for the state's agriculture, water resources, and biodiversity. The state has adapted to these conditions through various traditional practices, such as the construction of stepwells and the cultivation of drought-resistant crops.
In contrast, heavy rainfall is not characteristic of Rajasthan. Such conditions are more typical of regions with tropical or monsoon climates, which are not prevalent in Rajasthan. Therefore, the correct answer is (D) Only (A) & (B), as it accurately reflects the key geographical and climatic features of the state.