A charge nurse is teaching a newly licensed nurse about advance directives. which of the following statements by the newly licensed nurse indicates the teaching was effective? ◯ "Staff who provide advance directives information must be trained by the facility's legal department." ◯ "The client's health care proxy is required to be in agreement with the client's advance directives." ◯ "Advance directives must be signed by a provider to be considered valid." ◯ "There must be documentation in the medical record about whether a client has advance directives."