Final answer:
To allow a user to delete a file but not assign privileges to others, you should assign the 'Delete' permission.
Step-by-step explanation:
To assign privileges to a user so that they can delete a file but not be able to assign privileges to others, you should assign the 'Delete' permission. This permission allows the user to delete files, but does not grant them the ability to modify or assign privileges to other users.
Assigning the 'Full Control' permission would give the user complete control over the file, including the ability to modify, delete, and assign privileges to others.
Assigning the 'Administrator' permission would grant the user administrative privileges with full control over the system, not just the file. Lastly, assigning the 'Modify' permission would allow the user to make changes to the file, including deleting and modifying its content, but it does not restrict their ability to assign privileges to others.