A nurse is caring for a 17-year-old client who admitted for an emergency appendectomy. Which of the following is an appropriate action by the nurse in obtaining informed consent?
a) Explain the procedure and risks only to the client.
b) Obtain consent from the client's parent only.
c) Ensure the client has signed the consent form before administering preoperative medications.
d) Allow the client's roommate to witness the consent process.