Answer:B. Posttraumatic stress disorder
Step-by-step explanation:
Post-traumatic stress disorder (PTSD) is a mental health condition which affects someone who has experienced a traumatic event or who was there when something terrible happened. Like someone who had witnessed a shooting of their neighbor. A person will keep having flashbacks and dreaming about this particular incident as if it were happening at that moment. The person keep thinking about what happened non stop in away that is beyond their control. For some people it may only last few days and it may last longer for others which may require them to seek for professional help.