Final answer:
The correct information about advance directives is that a health care proxy can be designated to make medical decisions for a patient if they are unable to do so themselves.
Step-by-step explanation:
When a nurse reinforces teaching to a client about end-of-life decisions, the correct information about advance directives includes that a health care proxy can be designated. This is a legal document that appoints a specific person to make medical decisions for a patient if they are unable to speak for themselves. In terms of advance directives, informed consent is implied as the person making the directives is expressing their consent in advance for the medical treatments they do or do not want. It is not necessary to have legal counsel to make these decisions, but consulting with a professional can ensure the documents are properly prepared. Advance directives may include a living will, which details specific interventions a person wants, such as a Do Not Resuscitate (DNR) order, but they do not usually identify specific dietary restrictions unless these are relevant to the treatment wishes of the individual.