A nurse is reinforcing teaching about advance directives with a client admitted to the hospital and is scheduled for surgery. Which of the following statements made by the client indicates a need for further teaching?

"I can choose to withhold life support in my living will."

"I can change my health care proxy at any time."

"My children can make changes to my living will if I am incapacitated."

"The health care proxy does not go into effect unless I am incapable of making decisions."