Correct Option
The Aravalli Range represents one of the oldest fold mountain systems in the world and the oldest in India. Its formation is attributed to the Precambrian era, with an approximate age of 670 million years. This geological event is part of the Aravalli-Delhi Orogeny. Over vast geological timescales, the range has experienced extensive erosion, significantly reducing its original elevation. It stretches across parts of Rajasthan, Haryana, and Delhi.
Incorrect Options
Options (a) 370 million years, (b) 470 million years, and (c) 570 million years are incorrect. These values significantly underestimate the true geological age of the Aravalli Range. The Aravallis originated in the Proterozoic Eon, placing its age substantially older than 600 million years.