Which Indian geography term is associated with location or extent “extend in an arc from the Indus region toward the Brahmaputra bend” and also with “form a major climatic and physical barrier”?

Correct Answer: Option B — Himalayan Mountains. Himalayan Mountains is correct because it is extend in an arc from the Indus region toward the Brahmaputra bend. It is also associated with form a major climatic and physical barrier, which provides a second reliable identifying clue. These features are standard physical-geography facts and are useful for map-based and statement-based competitive-exam questions. Why the other options are incorrect: Option A — Northern Plains: It is lies south of the Himalayas; this is the specific geographical association of Northern Plains. Option C — Peninsular Plateau: It is lies south of the Northern Plains; this is the specific geographical association of Peninsular Plateau. Option D — Thar Desert: It is lies mainly in western Rajasthan; this is the specific geographical association of Thar Desert. Exam Takeaway: Connect Himalayan Mountains with “extend in an arc from the Indus region toward the Brahmaputra bend” for quick revision.