Which of the following troubleshooting steps did the technician MOST likely fall to complete?

A user is experiencing slow performance on a workstation. A technician Investigates and speculates the performance issue is being caused by an excessive number of background services running at startup. The technician troubleshoots the issue, and then finds and disables many services that have been running at startup. Next, the technician informs the user the remediation is complete. The following morning, the technician receives a call from the same user reporting performance is still slow.

Which of the following troubleshooting steps did the technician MOST likely fall to complete?
A . Establish a theory of probable cause.
B . Identify the problem.
C . Verify full system functionality.
D . Document findings, actions, and outcomes.

Answer: A