Which of the following represents a direct cost?

The correct answer identifies depreciation as a direct cost because it relates directly to the use of fixed assets in the production of goods or services. Depreciation allocates the cost of tangible assets over their useful lives, which is a direct reflection of the wear and tear or usage associated with those assets employed in generating revenue.

In contrast, the other choices do not fit the definition of direct costs in the same way. Marketing expenses, for instance, are generally classified as indirect costs that support overall business strategies but do not directly tie to specific products or services. Office supplies, while necessary for daily operations, are often considered indirect costs because they support various functions rather than directly contributing to the production of a specific item. Employee benefits, although they pertain to payroll and compensation, are also categorized as indirect costs because they cover the overall workforce rather than directly relating to the manufacturing or provision of specific goods or services. Thus, depreciation stands out as the only expense directly tied to the operational efficacy of specific assets.