What is commonly associated with the concept of depreciation?

The concept of depreciation is fundamentally tied to the idea of a reduction in the value of an asset over time. This reduction occurs due to various factors such as wear and tear, obsolescence, or changes in market demand. As assets age, they typically lose value, which is why businesses account for this loss through depreciation in their financial statements. This accounting practice allows for a more accurate representation of an asset's value and helps businesses reflect realistic profit margins over time.

In contrast to depreciation, increased asset value or improvements in efficiency suggest a positive change, while an unchanged asset worth contradicts the natural progression of asset valuation over time. Thus, understanding depreciation encompasses recognizing that assets typically decline in value, which aligns perfectly with the correct choice.