Question

What type of language convention has the author used to separate the declarative sentence from the disruptive phrase 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?"

Commas

Question mark

Capitalization

Em dashes

Answer 1

@adrynicoleb

Answer 2

@dumbsearch2

Answer 3

@dumbcow