Which of the following is an example of a durable item in materiel management?

A combat vehicle is classified as a durable item in materiel management due to its characteristics of longevity and repeated use. Durable items are typically those that do not quickly wear out or are consumed rapidly; instead, they are designed to last over an extended period while undergoing regular maintenance and operational use.

Combat vehicles, such as tanks or armored personnel carriers, are built to endure harsh environments and demanding operational conditions, making them a fundamental part of military readiness and capability. They are often maintained carefully to ensure they remain operational for many years.

Other options like ammunition, medical supplies, and food rations, while essential, are consumable items. They have specific lifecycles and are intended for immediate use or consumption rather than long-term durability. Thus, the designation of a combat vehicle as a durable item underscores the distinction between items intended for prolonged service and those that are expended or used within a shorter timeframe.