The gently sloping, submerged edge of a continent, where the sea is shallowest and the slope is usually 1° or less, is called the:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Continental shelf
The continental shelf is the extended margin of each continent under shallow seas and gulfs. It is the shallowest part of the ocean, with an average gradient of 1° or even less.