Final answer:
A kame is a hill of debris left by a retreating glacier, consisting of materials like sand, gravel, and till, forming an irregular topography.
Step-by-step explanation:
A kame is a geological feature that is formed as a result of glaciation deposition. It is c) A hill of debris left by a retreating glacier. As glaciers move and retreat, they often leave behind mounds of sand, gravel, and till. These materials are deposited at the melting edge of glaciers, creating a hill-like structure known as a kame. Kames can vary in shape and size, but they typically have an irregular topography and composition due to the unsorted sediment they are made of. This contrasts with features such as long ridges of gravel and sand, known as eskers, or circular depressions left by melting blocks of ice, known as kettles.