Final answer:
Folder options is the Control Panel utility that allows a technician to change the associated file type in a Windows XP machine.
Step-by-step explanation:
The Control Panel utility that will allow a technician to change the associated file type in a Windows XP machine is Folder options. By accessing the Folder Options in the Control Panel, the technician can modify file type associations, which determines what program the system uses to open specific file types. This can be helpful when a file type is not associated with the desired program or when a different program needs to be used for a specific file type.