Final answer:
A nurse who steals narcotics from the hospital would be considered a criminal action. Verbal disagreement, patient restraint, and refusing intoxicated visitors are not criminal actions.
Step-by-step explanation:
a. A nurse who steals narcotics from the hospital: This action would be considered a criminal action as it involves theft of controlled substances.
b. A nurse who gets into a verbal disagreement with a visitor: This action would not be considered a criminal action unless it escalates to physical assault or verbal threats that meet the criteria for assault.
c. A nurse who restrains a patient who is considered a threat to himself: This action would not be considered a criminal action if it is done in the best interest of the patient's safety and wellbeing.
d. A nurse who refuses to allow a visitor onto the unit who appears intoxicated: This action would not be considered a criminal action as it is within the nurse's professional judgment to deny access to individuals who may pose a risk to the safety or well-being of patients.