Telegraph Plateau is a part of

The correct answer is A) North Atlantic. Telegraph Plateau is a submarine plateau in the North Atlantic, lying between Ireland and Newfoundland. It takes its name from the first transatlantic telegraph cable, laid across it in 1858.

Why the others are wrong:

• B) South Atlantic: Features like the Walvis Ridge and the Rio Grande Rise are South Atlantic features, not Telegraph Plateau.
• C) Indian Ocean: Ridges such as the Ninetyeast Ridge and the Chagos-Laccadive Ridge belong to the Indian Ocean floor, not this plateau.
• D) None of these: Wrong, because option A is correct.

The core concept is ocean-floor relief: plateaus, ridges and rises that make up the seabed. For Mains, this links to submarine cable routes, seabed mapping and the strategic and economic use of the ocean floor.

Trap: Candidates often memorise the name without its location and guess from the word 'Atlantic' alone. Pair each seabed feature with its ocean during revision.