The U-shaped valleys in the Rocky Mountain region are the result of

(1 point)

A. erosion and deposition by rivers.

B. erosion by glaciers.

C. uplift.

D. freeze and thaw weathering.

1 answer

B. erosion by glaciers.

U-shaped valleys are typically formed by the glacial erosion processes, where glaciers carve out the landscape, creating the characteristic U shape as they move through the valleys.