Which is one feature of the ocean floor found in the open ocean? trench
abyssal plain
continental slope
continental shelf

continental shelf

Explanation:

Features of the ocean include the continental shelf, slope, and rise. The ocean floor is called the abyssal plain. Below the ocean floor, there are a few small deeper areas called ocean trenches. Features rising up from the ocean floor include seamounts, volcanic islands and the mid-oceanic ridges and rises.

the answer is a and have a great day