The correct option is C Trenches
Solution:
Option A: Trenches
Explanation:
Trenches are long narrow depressions on the sea floor. Ocean trenches are long, narrow depressions on the seafloor. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth.
There are mountains, basins, plateaus, ridges, canyons and trenches beneath the ocean water too. These relief features found on the ocean floor are called ocean relief.
The different ocean relief features include a continental shelf, continental slope, abyssal plain, mid-oceanic ridge and trench.
At many convergent plate boundaries, dense lithosphere melts or slides beneath less dense lithosphere in a subduction process, creating a trench.
Mariana Trench is the deepest trench (36,201 feet) found in the western Pacific ocean.