Final answer:
Officers use Code 3 or Priority 1 response to quickly address emergencies involving potential death, serious injury, or the occurrence of a forcible felony.
Step-by-step explanation:
The responding code used by officers for an emergency situation where there is a possibility of death, great personal injury, preventing a forcible felony, or apprehending a forcible felon is often referred to as Code 3 or a Priority 1 response. This code typically entails the use of lights and sirens and the officer is authorized to break certain traffic laws, such as driving through red lights or exceeding speed limits, to reach the emergency as quickly and safely as possible. Different jurisdictions might have varying codes, but Code 3 is widely recognized in the United States.