Final answer:
Dr. Elizabeth Kübler-Ross is best known for her groundbreaking work on the five stages of grief: denial, anger, bargaining, depression, and acceptance, as detailed in her book On Death and Dying.
Step-by-step explanation:
Dr. Elizabeth Kübler-Ross is best known for her seminal work on the five stages of grief, which she outlined in her 1969 book On Death and Dying. These stages include denial, anger, bargaining, depression, and acceptance, providing a framework to understand how people cope with the prospect of death and loss. Kübler-Ross's research was pioneering at the time, vastly influencing the fields of thanatology, hospice care, and our understanding of the emotional processes involved when facing terminal illness or the loss of a loved one.
Her work was a cornerstone in opening dialogue and studies on the subject, which had been largely ignored prior to the 1960s. While not everyone may follow these stages in order or experience all of them, and some may cope differently due to various personal beliefs or social supports, the Kübler-Ross model remains a significant contribution to medicine, psychology, and thanatology.