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Correct Answer: Option (B) — Syntaxial bending of geologically young Himalayas
Concept & Option Breakdown
Standard Reference VerifiedThe Brahmaputra (Tsangpo) flows eastward in Tibet and suddenly takes a sharp hairpin/U-turn around the Namcha Barwa peak to enter India (Arunachal Pradesh). This abrupt change in direction is due to the syntaxial bending (sharp knee-bend tectonic syntax) of the geologically young Himalayan fold mountain belt at its eastern extremity.
The sharp directional loop of the Brahmaputra at Namcha Barwa is a textbook geomorphological example of Himalayan syntaxial bending.
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