What best describes the term erosion?

The term erosion refers to the process by which materials, such as soil and rock, are worn away and transported by natural forces like water, wind, or ice. This process involves the gradual breakdown and removal of earth materials, leading to changes in the landscape. Therefore, "wear" is the most suitable descriptor, as it encapsulates the essential characteristic of erosion: the wearing away of Earth's surface due to environmental factors.

In contrast, the other options do not align with the concept of erosion. "Completion" implies finishing or reaching an end state, which does not relate to the ongoing process of material removal. "Accumulation" suggests a buildup of materials, opposite of the concept of erosion where materials are lost rather than gained. "Stability" indicates a state of being unchanged or balanced, which contrasts with erosion’s nature of altering landscapes over time. Thus, the answer describing erosion accurately as "wear" highlights the fundamental idea of material degradation and displacement.