Which term indicates the total quantity of materials available in storage facilities?

The term that indicates the total quantity of materials available in storage facilities is "Stock." In inventory management, "stock" refers to all the items that a business has on hand, including finished goods, work in progress, and raw materials stored in various locations.

While "inventory" is often used interchangeably with "stock," it can also encompass the broader concept of tracking quantities, movements, and values of materials over time. In contrast, "stock" is more specifically focused on the physical quantity present at any given moment.

"Supplies" generally refer to consumables that are required to conduct operations but may not directly relate to the physical presence of materials in storage. "Commitment" refers to obligations for future material deliveries and does not reflect current quantities in storage. Thus, "stock" is the most accurate term to denote the total quantity of materials available in storage facilities.