Assertion (A): Geologically, the Peninsular Plateau was supposed to be one of the most unstable land blocks.

Reason (R): From the viewpoint of geology, the Himalayan mountains form an unstable zone.

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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

India is a huge landmass that has been produced over many geological ages, which has influenced its relief. Weathering, erosion, and deposition have all played a part in changing the current relief features of India. The Peninsular region of India is the oldest landmass, whereas the Himalayas and Northern Plains are the most recent landforms. The Himalayan mountain system is an unstable zone with juvenile morphology from a geological standpoint. The Ganga-Brahmaputra-Indus river system has deposited alluvial sediments that make up India's Northern Plains. The Gondwana territory, which is the southern section of the supercontinent Pangea, includes the peninsular region of India.

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