Which type of inventory is known as a physical count of all items in specified categories?

The correct answer, which identifies the type of inventory as a physical count of all items in specified categories, is specific commodity inventory. This inventory methodology involves systematically counting and recording the quantities of specific types of items, often necessitating a thorough examination of goods to determine their exact numbers within particular classifications. This process ensures accuracy in inventory management, helping organizations maintain optimal stock levels and mitigate potential shortages or overages.

Specific commodity inventory contrasts with other inventory types that may not focus on a physical count of items across defined categories. While annual inventory involves counting all items once a year, it isn't limited to specific categories and may not provide as detailed an overview as specific commodity inventory. Random inventory and spot inventory are typically less comprehensive and do not encompass a full physical count of all items in specified categories.