The best way to provide information to management about emergency changes that may not be approved is to use key risk indicators (KRIs). KRIs are metrics that measure the likelihood and impact of risks, and help monitor and prioritize the most critical risks. KRIs help to provide information to management about emergency changes, because they help to alert and inform management about the potential risks and consequences of the changes, and to support the risk decision-making and reporting processes. KRIs also help to provide information to management about emergency changes, because they help to track and evaluate the effectiveness and performance of the changes, and to identify and address any issues or gaps that may arise from the changes. The other options are not the best way to provide information to management about emergency changes, although they may be part of or derived from the KRIs. Change logs, change management meeting minutes, and key control indicators (KCIs) are all examples of documentation or communication tools, which may help to record or report the details and status of the changes, but they do not necessarily measure or monitor the risks and outcomes of the changes. References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.5.1, page 4-38.