Which account policy would best prevent unauthorized access shown by logins from vastly different geographical locations?

Utilizing geofencing as an account policy is particularly effective in mitigating unauthorized access from diverse geographical locations. Geofencing involves creating a virtual perimeter around a specific geographic area, allowing or restricting access to resources based on the user's physical location. This method ensures that logins can only occur from designated regions, effectively blocking attempts from locations outside of these parameters.

By implementing geofencing, organizations can proactively prevent unauthorized access attempts that originate from locations deemed suspicious or outside regular operational zones. This is especially pertinent for systems and applications that require heightened security, as it offers a clear boundary that can be monitored for compliance.

While other options like geolocation and impossible travel time also serve to address similar security concerns, geofencing specifically establishes clear boundaries on where logins are permitted, making it a direct method for controlling access based on a user's location.