Which of the following is NOT an example of an easement?

The correct answer highlights a restriction that is not classified as an easement. An easement typically involves the right to use someone else's land for a specific purpose, often benefiting the property owner using the easement while not necessarily granting ownership rights. The first option describes a restriction imposed on property owners rather than a right of use, meaning it does not fit the definition of an easement.

In contrast, the other examples all involve scenarios where one party has a legal right to use a portion of another party's land. This includes mutually beneficial arrangements, such as a party wall, or specific rights to access, like a right-of-way for service personnel or utility lines. Each of those represents a legal interest allowing the usage of land owned by another, which is characteristic of easements.