Of the ways listed, which is the best way to temporarily suspend a user's ability to interactively login?

Changing the user's UID would disassociate their files and processes, potentially causing system inconsistencies and not being a standard way to suspend login.

Changing the user's password makes the old password invalid but is less secure and less clear than disabling the shell, as a new password could be set.

Changing the user's shell to `/bin/false` (or `/sbin/nologin`) in `/etc/passwd` prevents the user from starting an interactive shell upon login. This method effectively suspends interactive login capabilities without deleting the user's account or associated data.

Removing the user's entry in `/etc/passwd` would delete the user account entirely, which is not a temporary suspension and also removes all associated user data and permissions.