Which section of a man page contains utilities used by the root user?

The section of a man page that contains utilities used by the root user is section 8. This section specifically provides documentation about system administration commands and tools that are generally intended for use by the superuser (root).

Section 1 of the man pages contains general user commands, while sections 5 and 7 cover file formats and conventions as well as miscellaneous information, respectively. Hence, these sections are not tailored specifically for commands that require superuser permissions. Section 8, on the other hand, focuses on administrative tasks and tools, making it essential for users operating in a privileged context. This is why section 8 is the correct answer regarding the documentation of utilities intended for the root user.