What is the purpose of the dashes in this excerpt from \"Totally like whatever, you know?\". \"Declarative sentences—so--called. because they used to, like, DECLARE things to be true, okay,. as opposed to other things are, like, totally, you know, not—. have been infected by a totally hip. and tragically cool interrogative tone?\". Answers-. To maintain the normal flow of ideas. To support the author's purpose of maintaining normal flow of ideas. To disrupt the normal flow of ideas. To explain the normal flow of ideas.