Pls help im lonely very lonley

Ab+cd-> ad+bc is what kind of reaction

Select three examples of self-harming behavior.da. burning skin with heated objectsb. eating healthy foodsoc. cutting or sticking skin with sharp objectod. bruising yourself with a heavy object

James is sitting at his desk on the ground floor of an office building when the entire room starts shaking. which action is most appropriate in this situation? a. standing near a window b.running out of the building c.holding up a bookshelf d.preparing for aftershocks