Final answer:
Three things that must be determined if a death has occurred are the complete cessation of vital signs, lack of response to stimuli, and irreversible loss of bodily function.
Step-by-step explanation:
When determining if a death has occurred, there are three key things that must be determined:
- Complete cessation of vital signs: This includes the absence of a heartbeat, breathing, and brain activity.
- Lack of response to stimuli: The person does not respond to any external stimuli, such as touch, sound, or light.
- Irreversible loss of bodily function: The person's bodily functions, including circulation, respiration, and brain function, cannot be restored.
These three factors are crucial in determining if a death has occurred.