A user reports a PC is running slowly. The technician suspects it has a badly fragmented hard drive. Which of the following tools should the technician use?

Resmon.exe, or Resource Monitor, is a tool used for monitoring system resources such as CPU, memory, disk, and network usage. While it provides valuable insights into resource allocation and performance issues, it does not have the capability to defragment a hard drive or improve its performance directly.

Msconfig.exe, or System Configuration, is primarily used for managing startup programs and services, as well as troubleshooting system performance issues. Although it can help optimize boot times and system processes, it does not address disk fragmentation or provide any disk management functionalities.

Msinfo32.exe, or System Information, provides detailed information about the hardware, system components, and software environment of a PC. While useful for diagnostics, it does not include functionalities for managing or optimizing hard drive performance, making it irrelevant for addressing fragmentation issues.