The answer is C: acceptance.
Explanation for each option:
A. Anger: This stage involves feelings of frustration and helplessness. Individuals may ask "Why me?" and feel resentment towards their situation. Justin's decision to be left alone and his readiness for death do not align with the characteristics of anger.
B. Depression: In this stage, individuals may feel deep sadness, regret, fear, and uncertainty. While Justin may have experienced depression earlier, his current state of readiness and desire to be left alone suggest he has moved beyond this stage.
C. Acceptance: This stage is characterized by a sense of peace and readiness for what comes next. Individuals come to terms with their mortality and may wish to be left alone to prepare for the end. Justin's behavior aligns with the acceptance stage, as he has come to terms with his impending death and wants to be left alone.
D. Bargaining: This stage involves trying to negotiate for more time or a way out of the situation, often through promises or changes in behavior. Justin's readiness for death and desire to be left alone indicate he is not in the bargaining stage.
Therefore, Justin is experiencing the acceptance stage in Kübler-Ross's theory.