Final answer:
All stage theories of dying are based on the notion that people go through distinct stages in dying. Elisabeth Kübler-Ross identified five stages of grief: denial, anger, bargaining, depression, and acceptance.
Step-by-step explanation:
All stage theories of dying are based on the notion that people go through distinct stages in dying. This idea was first introduced by psychologist Elisabeth Kübler-Ross, who identified five stages of grief: denial, anger, bargaining, depression, and acceptance. These stages may occur in different orders for different individuals, and not all people experience all of the stages. The stages provide a framework for understanding and processing the emotional and psychological journey of dying.