Answer:
C. glaciers
Explanation:
The definition of glaciers is large masses of ice that travel over land surfaces. They transport material as they move and leave it behind on the way: rocks, sediments, and debris. This phenomenon, known as glaciation, plays a major role in how sediment is moved and erosion occurs. Glaciers erode rocks by dragging and scratching themselves against the bedrock; their action creates valleys, and fjords— even entire landscapes are sculpted by this erosive force over time.
