Which of the following indicates a status of readiness for a unit?

The Status of Requirements and Training Support System (SORTS) is a comprehensive reporting system that measures a unit's readiness and capability to perform its assigned missions. It assesses various factors including personnel, equipment, training, and supply status. SORTS provides a clear picture of a unit's overall readiness level and identifies specific strengths and deficiencies in its operational capability, making it a vital tool for command decisions related to deployment and resource allocation.

In contrast, other options focus on different aspects of unit performance or readiness but do not encapsulate the overall readiness status in the same comprehensive manner as SORTS. For instance, a Unit Performance Review is more about evaluating specific aspects of a unit's operation and effectiveness rather than providing an overall readiness classification. A Mission Capability Report is often limited to detailing the capabilities of a unit for specific missions at a particular time, while the Operational Readiness Classification might classify a unit’s readiness but lacks the detailed reporting structure of SORTS to gauge readiness comprehensively.