Hi!
The correct answer would be A.
Explanation:
An advanced directive, also known as living will, is a legal document that is designed by the person (undergoing medical treatment) in which he/she states the procedures and actions that should be undertaken if he/she is no longer capable of making decisions for him/her self (due to a medical condition).
A medical proxy is a legal document in which the person designates an individual who is allowed to take decisions regarding the person's health when he/she is no longer capable of making decisions for him/her self (due to a medical condition).
Hope this helps!
