In this excerpt from "Totally like whatever, you know?" elongated hyphens are most likely used for what purpose?

"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?"

To demonstrate uncertainty about the normal flow of ideas
To indicate an approval of the normal flow of ideas
To interrupt the pattern of speaking in the normal flow of ideas
To create a unusually normal flow of ideas