Final answer:
The preoperative task that may be delegated to the nursing assistant is applying the patient's thromboembolism deterrent (TED) stockings.
Step-by-step explanation:
The preoperative task that may be delegated to the nursing assistant is a. Apply the patient's thromboembolism deterrent (TED) stockings. TED stockings are elastic stockings that help prevent blood clot formation in the legs during surgery. This task can be performed by the nursing assistant under the supervision of the nurse or healthcare professional.