Question

multiple choice question
what is a chain of underwater mountains that runs throughout the ocean basins, has a total length over 65,000 km, and contains active and extinct volcanoes?
○ abyssal plain
○ mid-ocean ridge
○ deep-sea trench

Explanation:

An abyssal plain is a flat, deep ocean floor region, not a mountain chain. A deep-sea trench is a narrow, deep trough in the ocean floor. A mid-ocean ridge is a global underwater mountain chain spanning over 65,000 km across ocean basins, with active and extinct volcanoes, matching the description.

Answer:

B. mid-ocean ridge