Which statement about the Deccan Plateau and Western Ghats is correct from a relief perspective?

Correct answer: The Western Ghats form a steep mountain edge near the western margin of the Deccan Plateau

The governing concept is the relationship between a plateau and the escarpment or highland bordering it. The Deccan Plateau occupies much of peninsular India, while the Western Ghats run along its western margin, broadly parallel to the Arabian Sea coast. In many sections they form a pronounced, steep-sided edge or escarpment, making option A correct from a relief perspective. Option B incorrectly places the Western Ghats in the northern alluvial plain. Option C reverses the position of the Deccan and the Himalayas, because the Deccan is south of the Himalayan system. Option D wrongly identifies a vast basaltic plateau as a coral island.