The nurse is planning to teach a patient how to use relaxation techniques to prevent elevation of ...

The nurse is planning to teach a patient how to use relaxation techniques to prevent elevation of blood pressure and heart rate. The nurse is teaching the patient to control which physiological function?
 
  a. Switch from the sympathetic mode of the autonomic nervous system to the parasympathetic mode.
  b. Alter the internal state by modifying electronic signals related to physiologic processes.
  c. Replace stress-producing thoughts and activities with daily stress-reducing thoughts and activities.
  d. Reduce catecholamine production and promote the production of additional beta-endorphins.