Answer:
A. Valleys
C. Canyons
D. Caves
Step-by-step explanation:
Water is a powerful agent of erosion and weathering, and it can shape the landscape in a variety of ways. Valleys are formed by the gradual erosion of rock and soil by water flowing over the surface. Canyons are deep, narrow valleys formed by the same process, but usually on a larger scale. Caves are formed by the chemical erosion of limestone and other soluble rocks by acidic groundwater over long periods of time. Additionally, water can shape coastlines, create waterfalls, carve out gorges, and form river deltas, among other land forms.