Which of the Following Best Illustrates the Concept of Dissociation

Which of the following best illustrates the concept of dissociation?

A) While traveling from home to work and thinking about an important meeting, Jonathan noticed that he traveled several miles without remembering anything about the drive.
B) At a high school reunion, Kerry cannot remember the names of some of her former classmates.
C) A nervous Marlene cannot remember her lines during the opening of a play.
D) Even after two weeks in the hospital, Thomas remains unconscious following a motorcycle accident.