If by Hollywood Killer you're referring to DD Clark and Carol M. Bundy then they would lure prostitutes and young teenage girls to have sexual intercourse and shoot them shortly after. Some he decapitated and some he would procede to having sexual intercourse even after they were dead (necrophilia). He would dispose of the bodies out in the open.
The answer should be B) because social media is a long distance communication tool for people, so not C) since that's false, that's where most danger is at is online, not D) because that wasn't the original purpose, but sadly its become popular now and not A) because that's incorrect.
1000AD that is when it was written
Did you ever figure out an answer?
B.) A slideshow displaying several images of endangered species.