An increase in emergency changes without proper approval indicates potential weaknesses in the change management process. Initiating a comprehensive review helps identify root causes, assess control effectiveness, and implement necessary improvements to prevent recurrence.
Reference:ISACA CRISC Review Manual, 7th Edition, Chapter 3: Risk Response and Reporting, Section:
Change Management.

IT governance is the process of ensuring that IT supports the organization's objectives and strategies, and that IT risks are managed appropriately. IT governance involves defining the roles, responsibilities, and accountabilities of the IT stakeholders, establishing the IT policies, standards, and procedures, and monitoring and evaluating the IT performance and outcomes1.
An organization that automatically approves exceptions to security policies on a recurring basis is most likely the result of ineffective IT governance, because it indicates that the organization:
Lacks a clear and consistent IT strategy and direction, and does not align IT with the business goals and needs Fails to implement and enforce the IT policies, standards, and procedures, and does not ensure the compliance and accountability of the IT users and providers Neglects to identify and assess the IT risks, and does not implement the appropriate risk responses and controls Does not monitor and measure the IT performance and outcomes, and does not review and improve the IT processes and practices23 The other options are not the most likely results of ineffective IT governance, but rather some of the possible causes or consequences of it. A lack of mitigating actions for identified risk is a possible consequence of ineffective IT governance, as it implies that the organization does not have a systematic and proactiveapproach to IT risk management, and does not address the IT risks in a timely and effective manner.
Decreased threat levels is a possible cause of ineffective IT governance, as it may create a false sense of security and complacency, and reduce the motivation and urgency to implement and follow the IT policies, standards, and procedures. Ineffective service delivery is a possible consequence of ineffective IT governance, as it means that the organization does not deliver the IT services that meet the expectations and requirements of the customers and stakeholders, and does not ensure the quality and reliability of the IT services. References = IT Governance - ISACA IT Governance: What It Is and Why You Need It IT Governance: The Benefits of an Effective Enterprise IT Governance Framework
[CRISC Review Manual, 7th Edition]

Information security metrics are quantitative or qualitative measures that indicate the performance and effectiveness of the information security processes, controls, and objectives. The primary goal of developing information security metrics is to enable continuous improvement of the information security program and to align it with the business goals and strategy. Information security metrics can help to identify the strengths and weaknesses of the security program, to monitor and report on the progress and outcomes of the security initiatives, to evaluate the return on investment and value of the security activities, and to provide feedback and guidance for improvement actions. Information security metrics should be relevant, reliable, consistent, and actionable. References = Risk and Information Systems Control Study Manual, Chapter 3, Section 3.3.2, p. 116-117

The average time to provision user accounts is the most useful indicator to measure the efficiency of an identity and access management (IAM) process, because it reflects how quickly and smoothly the process can grant access to the appropriate users. The average time to provision user accounts can be calculated by dividing the total time spent on provisioning user accounts by the number of user accounts provisioned in a given period. A lower average time indicates a more efficient IAM process, as it means that users can access the resources they need without unnecessary delays or errors. A higher average time may indicate problems or bottlenecks in the IAM process, such as manual steps, complex workflows, lack of automation, or insufficient resources. The average time to provision user accounts can also be compared across different applications, systems, or business units to identify areas for improvement or best practices. The other options are less useful indicators to measure the efficiency of an IAM process. The number of tickets for provisioning new accounts shows the demand for the IAM process, but not how well the process meets the demand. The password reset volume per month shows the frequency of password-related issues, but not how effectively the IAM process handles them. The average account lockout time shows the impact of account lockouts on user productivity, but not how efficiently the IAM process prevents or resolves them. References = Top Identity and Access Management Metrics

The most reliable evidence of the effectiveness of security controls implemented for a web application is penetration testing. Penetration testing is a process that simulates an attack on the web application by exploiting its vulnerabilities, using the same tools and techniques as real attackers. Penetration testing helps to evaluate the effectiveness of security controls, because it helps to verify that the security controls can prevent, detect, or mitigate the attack, and to measure the impact and severity of the attack. Penetration testing also helps to identify and address any weaknesses or gaps in the security controls, and to provide recommendations and solutions for improving the security of the web application. The other options are not as reliable as penetration testing, although they may provide some evidence of the effectiveness of security controls. IT general controls audit, vulnerability assessment, and fault tree analysis are all examples of analytical or evaluative methods, which may help to assess or estimate the effectiveness of security controls, but they do not necessarily test or measure the effectiveness of security controls in a realistic scenario. References = 10