Final answer:
Peter and Jennifer's actions of buying life insurance and making a will relate to the preparation stage of adjustment to widowhood, which is proactive planning rather than a part of the grieving process.
Step-by-step explanation:
Peter and Jennifer are in the preparation stage of adjustment to widowhood by taking proactive steps such as purchasing life insurance policies and making a will.The explanation for this touches upon the Kübler-Ross's five-stage model of grief, which consists of denial, anger, bargaining, depression, and acceptance. These stages are generally associated with the individual's process of coping with the prospect of death or dealing with grief post a loss. However, Peter and Jennifer's actions of buying life insurance and making a will reflects a different aspect of dealing with death - the practical preparation.
This type of preparation is a proactive measure to ensure that matters are in order for the surviving spouse, and it typically occurs long before any grief or mourning process begins. Hence, these actions relate to the stage of preparation for the eventualities that come with the end of life.