Detailed Solution:
The correct answer is “North Atlantic Ridge”.
Telegraphic Plateau is a part of the North Atlantic Ridge.
The North Atlantic Ridge is an underwater mountain range that extends from the Arctic Ocean to the South Atlantic Ocean.
The Telegraphic Plateau is located in the northern part of the ridge and is named after the transatlantic telegraph cable that was laid across it in the late 1800s.
The plateau is a broad and flat area with an average depth of about 3,000 meters, and it is an important site for scientific research on seafloor spreading and tectonic activity.