Tyler, a system administrator, notices high CPU usage and unknown processes on a workstation used...

This scenario reflects misuse of system resources, a category defined in ECIH network and endpoint incident classification.

Option C is correct because unauthorized software caused excessive CPU usage and system strain, violating acceptable use policies.

Options A, B, and D do not match the behavior described.

ECIH classifies such activity as a security incident because it impacts availability, performance, and risk exposure.