Question

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

Explanation:

A glacial erratic is defined as a large rock that is transported and deposited in a different area by a glacier (distinct from the rock's original location). The first option describes a uniquely shaped rock formed by a glacier (not the definition of erratic). The second option is a U - shaped valley (a glacial landform but not an erratic). The third option is the path of a glacier (not an erratic). The fourth option matches the definition of a glacial erratic.

Answer:

a large rock deposited to a different area by a glacier