Final answer:
The nurse might instruct nursing assistive personnel (NAP) to put on a disposable sensor cover before taking the temporal artery temperature.
Step-by-step explanation:
For temporal artery temperature assessment, the nurse might instruct nursing assistive personnel (NAP) to put on a disposable sensor cover before taking the temporal artery temperature. This is important to maintain hygiene and prevent cross-infection. Other instructions like placing the sensor flush on the patient's forehead or obtaining the temperature reading on the lower neck are not applicable to temporal artery temperature assessment.