Douglas Diggington purchased real property containing gravel pit surrounded by land owned by Louis Sachar. The only access to the gravil pit through a road on Sachar's property. As part of Diggington's real property purchase, he owned the right to drive his shovel-trucks on Sachar's road. This right is known as _____________.

eminent domain.

the right to enjoyment.

adverse possession.

an easement.