Read the excerpt below and answer the question.

to interrupt another, even in common conversation, is reckon’d highly indecent. how different this is, from the conduct of a polite british house of commons where scarce every person without some confusion, that makes the speaker hoarse in calling to order and how different from the mode of conversation in many polite companies of europe, where if you do not deliver your sentence with great rapidity, you are cut off in the middle of it by the impatient loquacity of those you converse with, and never suffer’d to finish it—

in this excerpt from "remarks concerning the savages of north america," which device does franklin use to convey his opinion?

irony

metaphor

satire

understatement