What factors can lead to depreciation in real property?

The correct answer identifies three primary forms of depreciation that can impact real property: physical deterioration, functional obsolescence, and economic obsolescence.

Physical deterioration refers to the wear and tear that property experiences over time, which may arise from natural aging, lack of maintenance, or damage from external forces. This type of depreciation is observable and measurable, as it can reduce the property's value directly by affecting its structural integrity and aesthetics.

Functional obsolescence occurs when a property becomes less useful or desirable due to changes in design, technology, or consumer preferences. For example, a home with outdated features or an inconvenient layout may not appeal to modern buyers, leading to a decrease in its market value.

Economic obsolescence is related to external factors impacting property value, such as changes in the local economy, zoning laws, or neighborhood conditions. For instance, a once-desirable neighborhood may decline due to increased crime rates or the construction of an undesirable facility nearby, leading to a drop in property values.

Together, these three forms encompass the various ways in which a property's value can diminish over time due to both internal and external influences, which distinguishes them from the other options that focus on factors either unrelated to depreciation or that suggest value increase.