Belinda and Peter Own Neighbouring Pieces of Land

Belinda and Peter own neighbouring pieces of land. Peter's property is accessible from the highway only by driving across Belinda's land. Peter has acquired a legal right to drive across Belinda's land as a result of doing so for many years. Peter therefore benefits from the legal concept of

A) adverse possession.
B) prescription.
C) habitual trespass.
D) malum in se.
E) res ipsa loquitur.