Which of the following is the FIRST step when troubleshooting an issue?

The very first step in effective troubleshooting is always to clearly identify the problem, gathering all relevant information to understand the issue before attempting any solutions.

Verifying full system functionality is a step performed near the end of the troubleshooting process, after a solution has been implemented.

Documenting all findings is an ongoing practice throughout troubleshooting and a crucial final step, but not the initial action.

Establishing a theory of probable cause comes after identifying the problem and gathering initial information, serving as the basis for testing potential solutions.