Final answer:
Option c) Freehold or leasehold correctly classifies the allodial system, with freehold being the most similar to allodial ownership.
Step-by-step explanation:
The allodial system refers to a mode of land tenure characterized by the individual ownership of land where the owner has absolute rights over the land free of any superior landlord. This concept differs from feudal land ownership, where land was typically held in exchange for service or labour. Allodial title is in direct contrast with the feudal system that was prevalent during the Middle Ages in Europe and is more akin to the contemporary concept of real property ownership.
Answering the provided question, the allodial system refers to individual ownership of land classified as c) Freehold or leasehold. This option best fits the description as freehold interests in land are ownership for an indefinite period, and are not beholden to a superior landlord, similar to the allodial system. On the other hand, leasehold implies a temporary right to use a piece of land or property, which can be conceived as somewhat contrary to the allodial concept but is included here to contrast the type of interests one may hold in land.