Explanation: Rajasthan, located in the northwestern part of India, is renowned for its vast desert area, primarily the Thar Desert. The Thar Desert, also known as the Great Indian Desert, is one of the largest subtropical deserts in the world and covers a significant portion of Rajasthan. This desert area constitutes the highest percentage of desert land among all Indian states.
The Thar Desert spans approximately 200,000 square kilometers, with about 85% of it located within Rajasthan. The desert is characterized by its arid climate, sparse vegetation, and sand dunes. The region experiences extreme temperatures, with hot summers and cold winters. The desert's unique ecosystem supports a variety of flora and fauna adapted to the harsh conditions.
Rajasthan's desert area significantly influences the state's climate, ecology, and culture. The desert region is home to several important cities and towns, including Jaisalmer, Bikaner, and Jodhpur, which have developed unique architectural styles and cultural practices to cope with the desert environment.
In contrast, other states like Gujarat, Madhya Pradesh, and Uttar Pradesh do not have such extensive desert areas. Gujarat has a smaller desert region in the Kutch area, but it does not cover as high a percentage of the state as the Thar Desert does in Rajasthan. Madhya Pradesh and Uttar Pradesh are known for their diverse geography, including forests, hills, and rivers, but they do not have significant desert regions.
Therefore, Rajasthan is the correct answer as it has the highest percentage of desert area among all Indian states, primarily due to the vast expanse of the Thar Desert within its borders.