The statement that is most accurate of a landform is a moraine is a hill of debris formed by a retreating glacier. (Option A).
What is moraine?
A moraine is a landform that is created by the deposition of sediment and rocks carried by a glacier. As a glacier moves, it erodes the underlying rock and picks up debris along the way.
When the glacier starts to retreat or melt, it deposits this accumulated debris in the form of ridges or hills. These ridges are called moraines.
There are different types of moraines, such as terminal moraines, which are deposited at the farthest point of glacier advance, and lateral moraines, which form along the sides of a glacier.
So option A is the correct answer.