Which forward observer control option assigns a specific fire support asset to an FO for requesting support?

The correct choice focuses on the concept of designating a specific fire support asset to a forward observer (FO) for requesting support. When a control option is referred to as "designated," it means that the FO has a clear and specific assignment of which fire support resource they can call upon, enabling them to effectively coordinate and use that asset during operations. This structured approach allows for greater efficiency and clarity in communication, as the FO knows exactly which asset is available to them and can directly request support without delays or confusion.

In contrast, decentralized and centralized options do not specifically assign a fire support asset to the FO. In a decentralized approach, the FO may have the flexibility to choose from various available resources but without a specific assignment. On the other hand, a centralized option often involves a control mechanism where requests are funneled through a central command, which can restrict the direct line of communication that the FO needs when calling for fire support. Therefore, the key aspect of the designated option is its specificity, which enhances operational effectiveness on the battlefield.