Which term refers to metrics used to assess library effectiveness?

• A. Performance Data
• B. Library Management Evaluation
• C. First-Aid Procedures
• D. Strategic Plan Alignment

Answer: (A)

Measuring a library's effectiveness relies on performance data—the concrete metrics that reveal usage, service quality, and outcomes. These data capture how well programs meet user needs, how efficiently services are delivered, and the actual impact on the community, giving a clear picture of overall performance. The other options miss that central idea: first-aid procedures are about safety protocols, not measurement of library success; strategic plan alignment describes whether actions line up with a plan rather than the actual metrics used to judge performance; and library management evaluation refers to assessing management practices, not the specific performance metrics used to gauge effectiveness.