Answer:
b. decrease in the stock of capital due to wear and tear.
Step-by-step explanation:
Depreciation is a reduction in the value of an asset over time, due in particular to wear and tear.
Depreciation is the gradual decrease in the economic value of the capital stock of a firm, nation or other entity, either through physical depreciation, obsolescence or changes in the demand for the services of the capital in question.
The monetary value of an asset decreases over time due to use, wear and tear or obsolescence. This decrease is measured as depreciation. ... Machinery, equipment, currency are some examples of assets that are likely to depreciate over a specific period of time.