Final answer:
According to soul theory, for one person to be identical to another, they must have the same personality, memories, and be connected to the same soul.
Step-by-step explanation:
According to the soul theory, for one person to be identical to another, they must have the same personality, memories, and be connected to the same soul. Therefore, the correct answer is D) All of the above.
This idea is discussed in different philosophical perspectives. Socrates believed in seeking wisdom and caring for the soul, while John Locke defined identity based on consciousness and memories. Aristotle had a functional conception of the soul, and Rene Descartes believed in the existence of an immortal soul separate from the body.