Final answer:
In healthcare, the nurse typically orders warm or cold applications under the guidance of the doctor.
Step-by-step explanation:
In the healthcare field, the decision to apply a warm or cold application is typically made by the healthcare professionals based on the patient's condition and needs. The nurse, under the guidance of the doctor, is responsible for ordering warm or cold applications. As a CNA, you cannot independently order a warm or cold application unless instructed and supervised by the nurse or doctor.