Answer :

The correct answer is:
- A person who has become possessed is known as a medium.

Explanation:
1. A medium is a person believed to have the ability to communicate with spirits or entities from the spirit world.
2. In some cultures or belief systems, individuals who are possessed or channeling spirits are considered mediums.
3. Mediums often act as intermediaries between the living and the spirit world, conveying messages or information from the spirits to those seeking guidance or communication.
4. Possession can be viewed as a state in which a spirit or entity temporarily takes control of a person, and mediums are sometimes associated with this practice.