Question

what is a glacial erratic?
○ a unique shaped rock formed by a glacier
○ a u - shaped valley created by glacial movement
○ a large rock deposited to a different area by a glacier
○ the winding path a glacier moves over time

Explanation:

A glacial erratic is a large rock that has been transported and deposited in an area different from its origin by a glacier. The other options describe different glacial - related features like unique - shaped rocks, U - shaped valleys, and glacial paths, but not glacial erratics.

Answer:

a large rock deposited to a different area by a glacier