A nurse on a medica-surgical unit is caring for a client who asks about advance directives and states that he wants to appoint a health care proxy. Which of the following responses should the nurse make?

“You must choose a member of your family to serve as your health care proxy”

“A health care proxy can make decisions for you when you are unable to do so”

“You should appoint a health care proxy before undergoing an invasive procedure”

“It is necessary for an attorney to approve your health care proxy”