Which of the following is NOT one of the four major topographic features of the ocean basin floor? A. deep-ocean trench B. abyssal plain C. submarine canyon D. seamount
Ocean basins are those areas found under the sea. These areas are inactive areas where deposits of sediment slowly collect or active areas where tectonic plates meet.
Ocean basins have various features such as trenches, sea mount, abyssal plain, guyot, etc.
Seamount is an isolated mountain of volcanic origin characterized by a pointed summit. Abyssal hill is a rounded underwater rise of low elevation, while a trench is an extremely deep elongated depression bordering an island or a continent arc.