Which of the following events is most likely to result in post-traumatic stress disorder (PTSD)?

Robbery at knifepoint, a life-threatening event, is most likely to result in post-traumatic stress disorder (PTSD). While life events such as divorce, bankruptcy, illness, and changing residence are stressful, they are rarely life-threatening. Psychological symptoms occurring after such less severe events may result in adjustment disorder, not PTSD.