Post trauma syndrome related to parent's death- nursing diagnosis most accurately describes this individual's problem.
Option: A
Explanation:
Trauma- an intense grief or shock that person receive when they face any untimely death or accident of his nearest one. When a person is under severe traumatic syndrome he used to behave in an unnatural way and suffers from depression in a large scale.
In this condition he needs medical attention and psychological consultant who have knowledge about this kind of mental health problem and can diagnose them with proper medical care. Traumatic attack takes years long to recover or sometimes whole age.