A. a place where a specific group of people used to stay
Explanation:
since the sentence includes "in their original haunts in the Middle East" we can believe that the Middle East is where the terrorists are staying/living/often go to
The pasage contributes to the development of ideas showing how people do not want to be friends with autistic people because of those negative prejudices that they have of these people. Just for being considered autistic, people can already think bad things about them.