A nurse is preparing to witness the informed consent for a patient scheduled for elective surgery. Which of the following actions should the nurse take? (Select all that apply)

Obtain verbal consent from the patient without a signed document if the patient agrees.

Verify that the patient understands the procedure and its risks.

Provide detailed postoperative care plans during the consent process.

Explain alternative treatment options that the provider did not discuss.

Witness the patient's signature on the consent form after confirming understanding.

Confirm the patient is legally competent and not under the influence of sedatives.