Assertion (A): The range lying to the south of the Himadri forms the most rugged mountain system and is known as Himachal or lesser Himalaya.

Reason (R): The ranges are mainly composed of highly compressed and altered rocks.

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Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

Assertion (A) is true, but Reason (R) is false.

Assertion (A) is false, but Reason (R) is true.

answer is A.

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Detailed Solution

Himachal forms the most rugged mountain system to the south of Himadri. The average height is from 3,700 to 4,500 metres. It is home to well-known valleys including Kullu, Kangra, and Kashmir. This range is well-known for its hill stations. So, Assertion(A) is correct.
The Himachal, sometimes known as the lesser Himalayas, have steep, barren southern slopes [high slopes prevent soil formation] and gentler, forested northern slopes. The ranges are mostly made up of compressed and altered rocks. Reason (R) is true and is the correct explanation of Assertion (A).

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