Documented procedures are the best way to enable effective IT control implementation. Documented procedures are the specific actions or steps that are performed to achieve the IT control objectives and mitigate the IT risks. Documented procedures provide clear guidance, consistency, and accountability for the IT control activities. Documented procedures also help to monitor and evaluate the effectiveness and efficiency of the IT controls, and to identify and address any gaps or weaknesses. The other options are not as effective as documented procedures, although they may support or complement the IT control implementation. Key risk indicators (KRIs) are metrics that measure the likelihood and impact of IT risks, but they do not specify how to implement the IT controls. Information security policies and standards are high-level statements that define the IT security goals and requirements, but they do not detail how to implement the IT controls. References = Risk and Information Systems Control Study Manual, Chapter 1, Section 1.3.2, page 1-15.