Final answer:
The term that signifies the overall lowering of rock material on the Earth's crust is denudation. It includes the processes of weathering, erosion, and the removal of weathered material.
Step-by-step explanation:
The general term signifying the overall lowering of the rock material on the Earth's crust is E) denudation. Denudation refers to the stripping away of rock or soil by processes such as weathering, erosion, or mass wasting. This natural process contributes to the gradual reduction of the Earth's surface in elevation and relief over time. While weathering involves the breakdown of rocks and minerals at or near the Earth's surface, denudation encompasses not only the disintegration of rock (weathering) but also the removal of the weathered material, often through erosion and transportation by agents like water, wind, and ice.