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To display the last logins of users on the system, the command used is "last". This utility reads from the `/var/log/wtmp` file, which keeps a record of all logins and logouts. When you execute the "last" command, it provides a chronological list of the last logged-in users, along with the time they logged in, the duration of their sessions, and their terminal details. This information can be invaluable for system administrators to monitor user activity and login trends.

In contrast, the other options serve different purposes. The "logins" command is not a standard command for viewing user login history and may not be available in all distributions. The "who" command shows currently logged-in users rather than historical login information. The "history" command displays a list of commands entered by the user in the current shell session, which does not relate to user login information. Therefore, "last" is the most appropriate choice for viewing the history of user logins on the system.