Which of the following factors is considered when determining storage cost?

When determining storage cost, the wages of guards and employees handling equipment are a crucial factor because they directly relate to the personnel needed to manage and maintain the storage area effectively. Labor costs contribute significantly to the overall expenses that a facility incurs in ensuring that equipment is kept safe, securely stored, and readily accessible.

In a storage context, having trained personnel is vital for protecting equipment from theft, damage, or neglect. Thus, the salaries associated with these roles are considered integral components of the storage cost as they reflect the necessary investment in human resources for the proper oversight and operational management of stored items.

Other factors, while potentially relevant to operational costs, do not directly pertain to the specific assessment of storage costs. For instance, insurance premiums, the cost of maintenance fluids, and depreciation are more aligned with overall asset management rather than the explicit costs incurred due to storage practices. They represent broader financial considerations rather than the immediate logistical and labor-related expenses tied to the storage facility itself.