Question

letter r is a(n)?
island arc
ocean plateau
hot spot
ocean trench
submarine canyon and fan
abyssal plain
mid - ocean ridge
back arc basin
passive continental margin
fracture zone

Explanation:

An abyssal plain is a flat - lying area of the deep - ocean floor. Visually, the feature labeled R in the image appears as a flat and expansive area of the ocean bottom, characteristic of an abyssal plain. Other features like island arcs are chains of volcanic islands, ocean plateaus are elevated flat areas on the ocean floor, hot spots are areas of volcanic activity, ocean trenches are long, narrow depressions, submarine canyons and fans are related to sediment transport, mid - ocean ridges are areas of seafloor spreading, back - arc basins are behind island arcs, passive continental margins are non - tectonically active edges of continents, and fracture zones are linear features related to plate tectonics.

Answer:

Abyssal plain