Which of the following processes is opposite to accretion?

The process that is opposite to accretion is erosion. Accretion refers to the gradual buildup of land through the deposition of sediment, often occurring along riverbanks or coastlines as materials are added to the land over time. In contrast, erosion involves the wearing away of land due to natural forces such as wind, water flow, or ice. It represents the removal of soil and rock, ultimately leading to a decrease in land mass.

Understanding these processes is crucial for land surveying, as they significantly impact land boundaries and ownership over time. While alluvion refers to the deposits of sediment that result from accretion, and avulsion pertains to a sudden change to the land or river course, neither accurately depicts the opposing force that erosion represents. Condemnation is a legal term concerning property acquisition by the government, which likewise does not fit in relation to geological processes like erosion and accretion.