What is the relationship between a drumlin and glacier movement?

The formation of drumlins is closely tied to the dynamics of glacier movement. Drumlins are streamlined hills created by the movement of glacial ice over underlying sediments. This process leads to the deposition of material in such a way that the long axes of the drumlins align parallel to the direction in which the glacier flows.

This alignment occurs because as the glacier advances, it sculpts the landscape and reshapes the sediment, creating these elongated hills. Hence, the characteristic shape and orientation of drumlins are directly influenced by the flow dynamics of the glacier. The correct answer accurately reflects this relationship, emphasizing how drumlins are a product of glacial activity rather than resulting from other processes or orientations unrelated to the glacier's movement.