What conclusion follows from the low height and strong erosion of the Aravalli Range?

It is a very ancient range worn down by prolonged erosion

Mountain height and surface condition can provide clues about geological age. A young fold mountain range usually has high, sharp, rugged peaks because uplift is relatively recent. A very old range has experienced weathering and erosion for a much longer time. Running water, wind, temperature changes, and other forces gradually wear down slopes and reduce relief.

The Aravalli Range is one of the ancient mountain systems of the Indian subcontinent. Its comparatively low height and strongly eroded, uneven landscape show that it has been exposed to erosion over a very long geological period. It is not a young fold range, a coral formation, or a glacial plain. Therefore option D is correct. The conclusion follows from connecting low relief and prolonged erosion with great geological age.

This is a Class 10 General Knowledge question. Chapter: Indian Geography. Topic: Mountains and Plateaus of India.