Final answer:
An advance directive is a legal document used to specify an individual's preferences regarding medical treatment and end-of-life care if they are unable to communicate. It is used to ensure that doctors follow the patient's request.
Step-by-step explanation:
An advance directive is a legal document that specifies an individual's preferences regarding medical treatment and end-of-life care if they become unable to communicate their wishes. It is used to ensure that doctors follow the patient's request, especially when they are incapacitated. Advance directives typically include instructions about resuscitation, life support, and organ donation.
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