Answer: Easement appurtenant
Explanation: In simple words, it refers to us the right that an individual can use the adjoining property which he or she gets from purchasing a land.
In the given case, Kaylee is the owner of a parcel of land behind the property which is owned by Clark and she wants to build a highway along with that property.
Hence from the above we can conclude that Kaylee will have an appurtenant easement.