Which Indian geography term is associated with exam-relevant association “helps divide India into tropical and subtropical zones” and also with “the parallel located at about 23°30′ north latitude”?

Correct Answer: Option D — Tropic of Cancer. Tropic of Cancer is correct because it is helps divide India into tropical and subtropical zones. It is also associated with the parallel located at about 23°30′ north latitude, 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 — Indian Standard Meridian: It is Indian Standard Time is UTC plus 5 hours 30 minutes; this is the specific geographical association of Indian Standard Meridian. Option B — Himalayan Mountains: It is give rise to many perennial rivers of northern India; this is the specific geographical association of Himalayan Mountains. Option C — Northern Plains: It is supports intensive agriculture because of fertile soils and level terrain; this is the specific geographical association of Northern Plains. Exam Takeaway: Connect Tropic of Cancer with “helps divide India into tropical and subtropical zones” for quick revision.