A person has permission from a property owner to hike on the owner's property during autumn months. The hiker has:

The individual in the scenario possesses a license, which is a legal term referring to permission given by a property owner to another person to use the property for a specific purpose. Unlike an easement, which is a right of use that can be permanent and usually runs with the land, a license is temporary and can be revoked at any time by the property owner.

In this case, the property owner has granted permission specifically for hiking during the autumn months, indicating that the hiker does not have permanent rights to the property but rather a temporary and conditional allowance to use it. This is precisely what distinguishes a license from a more enduring right like an easement, which would apply to continuous use of the property. The other terms such as easement by necessity or condemnation relate to different legal contexts involving rights to land usage typically without owner consent, while riparian rights pertain to water-related property usage. Hence, the correct understanding here identifies the nature of the relationship as one of a license.