Answer:
D. post-traumatic stress disorder
Explanation:
PTSD is a disorder in which a person has difficulty recovering after experiencing or witnessing a terrifying event.
Some symptoms of this disorder are having nightmares about the event, and avoiding situations that could trigger memories of the event. Sandra has those symptoms! More symptoms of PTSD she has is heightened reactions (she flinches when going through intersections) and anxiety (she's anxious when driving).