Answer;
The feature that forms most of the ocean floor is the abyssal plain.
Explanation;
- An abyssal plain is an underwater plain covered by sediments on the deep ocean floor. They lie between the foot of a continental and a mid-ocean ridge and cover more than 50% of the Earth's surface.
- Abyssal plain are formed as a result of the seafloor and the melting of the lower ocean crust. They are the flattest, most featureless areas on the Earth.
- Abyssal plains cover more area in the Atlantic and Indian Oceans and less of the Pacific Ocean.