Physical deterioration results from:

Obsolescence refers to a state where an object or technology is no longer wanted or useful, often due to advancements or changes in consumer preferences rather than physical damage. While it may lead to items being discarded, it does not directly cause physical deterioration; instead, it relates more to relevance and usability in a given context.

Reversion generally refers to a return to a previous state or condition, which does not directly relate to physical deterioration. This term is often used in contexts like biology or technology, where something may revert to an earlier form, but it does not imply the physical decline of an object due to usage.

Correlation indicates a relationship or connection between two or more variables. While correlation can be used to discuss trends or patterns, it does not imply a cause-and-effect relationship regarding physical deterioration. Thus, it does not pertain to the actual process of wear and tear that leads to the decline in physical condition.