What typically triggers the expiration of a license?

The correct choice regarding what typically triggers the expiration of a license is related to the concept of permanent revocation by the landowner. A license is a permission granted by a property owner to another party, allowing them to perform an act that would typically be considered trespassing. This permission can be revoked by the landowner at any time, and when this occurs, the license no longer has any standing, effectively leading to its expiration.

For example, if a property owner allows a business to operate on their land without formal rights, the owner has the authority to terminate that permission whenever they choose. This aspect of licenses underscores their temporary nature and the control property owners have over their granted permissions.

While the expiration of a fixed term can apply to leases or other contractual agreements, it does not universally pertain to licenses. Similarly, failure to use the license within a year might seem relevant but isn't a standard measure for license expiration. Therefore, the most accurate trigger for the expiration of a license is indeed the permanent revocation by the landowner.