When an administrator is troubleshooting a system, which of the following describes the NEXT course of action if a change does not solve the problem?

Establishing a new theory of probable cause is done after reversing the ineffective change and gathering more information, not immediately after an unsuccessful change.

According to standard troubleshooting methodologies, if a change does not resolve the problem, the administrator should reverse the change to avoid introducing new variables or problems and ensure the system returns to its known state before proceeding with further diagnosis.

Implementing the next logical change without first reversing the previous unsuccessful change can lead to compounded issues, making the problem harder to diagnose and potentially causing new problems.

Performing a root cause analysis is a more extensive process typically undertaken after the immediate problem has been resolved to prevent recurrence, not as the next immediate step when a single change fails during active troubleshooting.