Which command will load additional facts when using Facter?

The command that efficiently loads additional facts when using Facter is the one that employs the "-p" option. This specific flag instructs Facter to gather data from the external sources and plugins, allowing for more comprehensive and customized system information to be presented.

Using this command is particularly advantageous because it enables users to include any custom facts defined in modules or other locations, beyond the default set of facts that Facter typically collects. This ensures that the output of Facter is tailored to the unique requirements of a system administrator's infrastructure or environment.

The other commands do not serve the same purpose: one may display all available facts but does not load additional ones, while another could possibly not relate to the facts gathering process. Understanding the distinction between these commands helps in effectively utilizing Facter for system management and reporting.