The examples of Narmada and Tapi clarify which geographical difference?

Correct answer: Difference between estuaries on western coast and deltas on eastern coast

The direct answer is A: estuaries on the western coast and deltas on the eastern coast. Narmada and Tapi flow westward and enter the Arabian Sea. Their mouths are largely funnel-shaped estuaries, where fresh river water mixes with seawater and where strong tidal action prevents a large depositional delta from developing. In contrast, many major east-flowing rivers travel across broader plains and deposit much sediment near the Bay of Bengal, forming deltas. Option A correctly states this contrast. Option B is wrong because Lakshadweep and the Himalaya do not have the same origin: Lakshadweep is mainly coral, while the Himalaya are young fold mountains. Option C is wrong because the Eastern Ghats are discontinuous and broken, not continuously high. Option D is wrong because the Ganga delta is made mainly of river and sea sediments, not coral. Exam cue: west-flowing Narmada and Tapi are associated with estuaries.