Which of the following is MOST important to the effectiveness of key performance indicators (KPIs)?

Management approval is paramount because it ensures that KPIs are aligned with organizational goals and strategies, giving them the necessary authority and resources for implementation and monitoring. Without management buy-in, KPIs may lack the strategic relevance and organizational support required to drive meaningful performance improvements.

Annual review is important for continuous improvement and relevance, but the initial effectiveness relies more on proper setup and backing.

Relevance is a critical characteristic *of* a good KPI, but management approval ensures that the *relevant* KPIs are actually adopted and used throughout the organization.

Automation can improve efficiency in data collection and reporting but does not directly influence the strategic effectiveness or adoption of the KPI itself.