Which Legal Principle Most Likely Protects the Nurse from Liability in This Scenario

a Nurse Is Working in the Emergency Department When a Man, Identified as the Spouse of a Critically Injured Patient, Becomes Verbally Aggressive, Threatening Harm to the Staff If His Wife Does Not Receive Immediate Attention. in an Attempt to Protect the Patient and Staff, the Nurse Physically Restrains the Spouse and Causing Him Minor Injuries