What is the advance directive commonly used to appoint someone to make decisions on a care recipient's behalf?

The Durable Power of Attorney is the correct answer as it specifically allows an individual to designate someone else to make decisions on their behalf, particularly regarding healthcare and financial matters. This legal document empowers the appointed agent to step in and make choices for the care recipient when they are unable to do so due to incapacity or other circumstances.

In the context of healthcare, this means that the agent can make critical medical decisions that align with the care recipient's wishes and best interests. This mechanism ensures that someone whom the individual trusts can advocate for their preferences regarding treatment options, care plans, and end-of-life decisions.

Other options do have separate functions: a Living Will outlines an individual's wishes regarding medical treatment in scenarios where they are unable to communicate, primarily focusing on end-of-life issues. A Health Care Proxy also allows someone to make health care decisions on behalf of another but is typically more specific to medical decisions without the broader powers of financial decisions included in a Durable Power of Attorney. An Advance Care Plan, while crucial for setting preferences for care, does not appoint someone to make those decisions on the individual’s behalf.