Which statement best describes the purpose of advance directives ?

Choice A reason: Advance directives are legal documents, such as living wills or durable power of attorney for healthcare, that specify a person's preferences for medical treatment. They serve as a voice for the patient if they become incapacitated or unable to express their decisions due to illness or injury. Choice B reason: Advance directives do not replace the need for informed consent; rather, they provide the basis for consent when the patient is incapacitated. For patients who are conscious and competent, the standard process of obtaining informed consent for procedures must still be followed by the healthcare provider. Choice C reason: The purpose of these documents is strictly related to patient advocacy and autonomy in medical decision-making. They have no relationship to administrative tasks such as staffing assignments, nursing ratios, or hospital management. Their focus is entirely on the clinical and ethical management of the patient's care. Choice D reason: While advance directives are critical during emergencies, they are also used in chronic illness management and end-of-life care. They guide long-term decisions regarding life-sustaining treatments, such as mechanical ventilation or artificial nutrition, regardless of whether the situation is an acute emergency or a slow clinical decline.