I posted this a minute ago but it didn't show up so if it shows up twice, sorry!

I have read my book twice now and can't figure this one out. Can you please tell me where I can find this information?
When one person has partial possession of a parcel of land to use the land for a specific purpose, he or she has a(n)
Boundry; Natural Right; Easement; or Just Cause.
I think it's an Easement but I can't figure it out. Can you please direct me in the right direction?

Thank you!

I believe an easement is correct.