A nurse is obtaining informed consent for an adolescent who is scheduled for a cardiac catheterization. The adolescent's guardian states, "I don't understand why they need to do this procedure." Which of the following actions should the nurse take?

Request assistance from the anesthesiologist to clarify the misunderstanding.

Notify the provider who is scheduled to perform the procedure.

Explain the procedure to the adolescent and their guardian.

Witness the adolescent's signature on the informed consent form.