Which commands should a technician use to correct a slow Windows 10 PC? (Choose two.)

B is an appropriate choice because the 'chkdsk' command is used to check the file system and disk for errors. A slow Windows 10 PC can often be a result of issues related to the hard drive or file system corruption. By running 'chkdsk', a technician can scan for errors, fix file system issues, and improve overall system performance.

The 'dism' command can also be relevant in this context. While 'chkdsk' addresses disk problems, 'dism' is used for servicing Windows images, including repairs to system files, which may also resolve performance issues stemming from corrupted or missing files. This can restore the system to a healthier state, thereby improving speed and responsiveness.

The 'dir' command merely lists the contents of a directory and does not play a role in performance adjustments. Similarly, 'ipconfig' is used for network configuration and troubleshooting, which would not have a direct impact on the overall speed of a Windows 10 PC when used in isolation from other commands aimed at disk or system file management.