Final answer:
The stages in Kübler-Ross's model of grief are denial, anger, bargaining, depression, and acceptance, making the correct answer to the student's question 'denial' and 'acceptance'.
Step-by-step explanation:
The question is relating to Elisabeth Kübler-Ross's five-stage model of grief, which is a concept from the field of psychology, and specifically pertains to health education as it deals with the emotional processes involved in coming to terms with terminal illness and dying. The correct order of stages in the Kübler-Ross's model is denial, anger, bargaining, depression, and acceptance. Therefore, greeting people generally begin with the denial stage, and end with the acceptance stage, making the correct answer (c) denial, acceptance. Kübler-Ross's model is widely acknowledged in the health field and her book On Death and Dying is considered a classic that helped to frame the conversation around the process of dying.