Explain why the answer is correct and why the others aren’t.

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B. bedrock structure.

Explanation:

A landform refers to a geomorphic or natural feature of the Earth's surface, which typically makes its terrain. Some examples of landforms on planet earth are mountain, plains, valley, hills and plateau.

Basically, the tectonic plates such as the oceanic and continental lithosphere interact in three (3) ways and these are; divergent, transform and convergent boundaries.

A convergent plate boundary can be defined as a boundary where two (2) plates move towards each other, usually, resulting in subduction or collision. This action often causes mountain range such as the Himalayas to form by the collision between the plate carrying Eurasia and that of India; as a result of subduction which causes a plate to be forced underneath the mantle, deep ocean trenches are formed such as the Mariana trench.

The Catskills are commonly called mountains but are actually part of the Allegheny Plateau also referred to as Appalachian Plateau. The Catskills are classified as a plateau because of their bedrock structure which is caused by a valley, continental glaciers, and erosion from various watercourse.

Additionally, the Catskills is a mountain which got its name from early Dutch settlers in the United States of America.