Correct Answer. C. Security Logs Security Logs in Event Viewer contain records of security- related events specified by the system's audit policy, such as network access and authentication failures, which can help diagnose network security issues. This log is most relevant for identifying unauthorized access attempts or other security breaches that might be causing the network failures.
Option A is incorrect because Application Logs focus on individual application performances and errors.
Option B is incorrect because Setup Logs are used to track installation processes, not network security issues.
Option D is incorrect because Forwarded Events are collected from other computers, and while potentially useful, they are not the primary source for reviewing local security incidents.