What causes the termination of a prescription easement?

The termination of a prescription easement is correctly associated with the scenario where the servient estate holder openly prevents its use. A prescription easement is acquired through continuous and uninterrupted use of someone else's property for a specified period, typically without the owner's permission. If the servient estate holder actively interferes and prevents the use of the easement, this can disrupt the continuous use required to maintain the easement. Such open obstruction effectively terminates the easement because it challenges the very nature of how the easement was established, making it impossible for the easement holder to fulfill the legal requirements necessary for its continued existence.

While the other options may be relevant to understanding general easement principles, they do not pertain specifically to the procedural essence of how a prescription easement can be terminated. The death of the easement holder, the sale of the property by the easement holder, or the formal revocation in writing are all scenarios that have different implications for different types of easements but do not relate specifically to the natural termination of a prescription easement due to lack of use.