Explanation: In the context of Rajasthan's geography and meteorology, the low-pressure area that develops towards the end of May is a significant phenomenon. This low-pressure area is characterized by its elongated shape and its extension from the Thar Desert in the northwest to Patna and Chotanagpur in the east and southeast.
The Thar Desert, also known as the Great Indian Desert, is located in the northwestern part of India, primarily in Rajasthan. It is a vast arid region that experiences extreme temperatures and low humidity. The Chotanagpur Plateau, on the other hand, is located in the eastern part of India, covering parts of Jharkhand, Bihar, and West Bengal. Patna, the capital city of Bihar, is situated in the eastern part of the country.
During the month of May, as the summer season intensifies, a low-pressure area forms in Rajasthan. This low-pressure area is a result of the heating of the land, which causes the air to rise, creating a region of low pressure. The low-pressure area extends from the Thar Desert in the northwest to Patna and Chotanagpur in the east and southeast. This extension is due to the prevailing wind patterns and the geographical layout of the region.
The low-pressure area plays a crucial role in the weather patterns of the region. It influences the movement of monsoon winds and can lead to the onset of the monsoon season. The extension of the low-pressure area from the Thar Desert to Patna and Chotanagpur indicates the influence of this meteorological phenomenon on a large geographical area.
Understanding the extension of the low-pressure area is important for predicting weather patterns and preparing for the monsoon season. It is a key concept in the study of Rajasthan's geography and meteorology, and it is often tested in competitive examinations such as the UPSC Civil Services and Rajasthan State Services.
In conclusion, the correct answer is (C) Thar Desert, Patna and Chotanagpur, as it accurately describes the extension of the low-pressure area in Rajasthan towards the end of May. This extension is a significant meteorological phenomenon that influences the weather patterns in the region and is an important concept in the study of Rajasthan's geography and meteorology.