Which of the following is a key component of Advance Directives?

The designation of a healthcare proxy is a key component of advance directives because it specifically allows individuals to appoint someone they trust to make medical decisions on their behalf in the event they become unable to do so themselves. This ensures that their healthcare preferences and wishes are respected, even when they cannot communicate them. The healthcare proxy can advocate for the individual's choices and is a critical part of ensuring their rights and desires regarding medical treatment are honored.

Advance directives also serve to clarify an individual's values and wishes concerning medical care, particularly in end-of-life situations, which underscores the importance of having a designated person to act in their best interest. By legally designating a healthcare proxy, individuals can have peace of mind knowing that their wishes regarding treatment will be respected and articulated by someone who understands their values.