A psychiatric nurse is involved in the care of a client who attempted self-harm after a missed suicide risk assessment. The client's family is considering a malpractice lawsuit. Which of the following elements must the family prove to establish malpractice against the nurse? (Select all that apply.)

Rationale: A. To prove malpractice, it must be shown that a duty of care existed—meaning the nurse had a legal responsibility to provide care to the client. B. A voluntary act is not a required legal element for malpractice; professional negligence can occur even without intentional acts. C. Willful intent is not necessary for malpractice; it is based on negligence, not intent. D. The family must show that the nurse breached the standard of care, meaning the nurse failed to act as a reasonable nurse would under similar circumstances. E. There must be evidence that the client suffered harm as a direct result of the nurse’s breach in care.