The correct answer is "less than half to develop PTSD".
PTSD or also known as Post-traumatic stress is a psychological well-being issue that a few people create in the wake of encountering or seeing a hazardous occasion, similar to battle, a cataclysmic event, a fender bender, or r*pe. It's typical to have annoying recollections, feel tense, or experience difficulty dozing after this sort of occasion.