I'm pretty sure the answer you are looking for is C rhetorical question though I'm not sure. I've looked the question up on quizlet though it didn't come out well idk it wasn't very understandable, though I am pretty sure it is C. Hope this helps.
The answer is d. Querulous
A characteristic of informal writing is slang, abbreviations, short hand, or lack of punctuation.
im not 100% sure but im pretty sure 1. d and 2. a
i hope its right, but im pretty sure it is
