Final answer:
Financial stability is not one of the mentioned influential factors for adjustment to death in mid- to late adulthood. Social support, coping strategies, and physical health have been identified as significant factors affecting the adjustment process.
Step-by-step explanation:
Among the mentioned factors influential for adjustment to death in mid- to late adulthood, financial stability is not one that has been explicitly mentioned in the provided reference materials. The factors that have been noted include social support, coping strategies, and physical health. All these factors have been found to significantly affect how well individuals adjust to death or the loss of a loved one during later stages of life.
Support from social networks provides comfort and assistance while coping strategies developed over a person's lifetime help in managing grief and stress associated with loss. Physical health also plays a vital role, as those who are healthier can often cope better with the emotional and physical demands of bereavement. By contrast, financial stability, while important in many aspects of life, has not been indicated as a key factor in the research studies cited on dealing with death and dying in old age.