Final answer:
A living will or advanced directive is the document that represents an individual's wishes regarding end-of-life treatment. It can detail specific interventions a person wants and include a health care proxy.
Step-by-step explanation:
The document that represents the wishes of an individual regarding end-of-life treatment is called a living will or advanced directive. A living will is a written legal document that details specific interventions a person wants, such as choosing not to receive life-extending treatments. It can also include a health care proxy, which appoints a specific person to make medical decisions for the individual if they are unable to speak for themselves.