Question

which term is described as a flat expanse of ocean floor?
deep - sea trenches
guyots
continental shelf
abyssal plains

Explanation:

• Deep-sea trenches are narrow, deep depressions in the ocean floor, not flat expanses.
• Guyots are flat-topped underwater seamounts, not large flat ocean floor regions.
• Continental shelves are shallow, sloping areas extending from continents, not flat deep ocean floors.
• Abyssal plains are large, flat, and deep areas of the ocean floor, matching the description.

Answer:

abyssal plains