A user states that they have noticed longer wait times when opening applications. Which of the following should the technician perform in order to BEST resolve this issue?

Removing all startup entries would reduce boot time and free RAM but does not address the disk I/O latency responsible for slow application opening after the system is running.

The chkdsk /x command forces a volume dismount and checks for file system errors and bad sectors; it addresses corruption and disk errors rather than fragmentation-related performance degradation.

On magnetic hard drives, files become fragmented over time as pieces are written to non-contiguous sectors. When an application is opened, the read head must seek to multiple physical locations to load all fragments, increasing load time. Defragmentation consolidates file fragments into contiguous sectors, reducing seek time and improving application launch performance significantly.

Converting from FAT32 to NTFS changes the file system for security and large-file support features but does not defragment existing data or directly reduce application load times.