These lines of poetry from "totally like whatever, you know? " are most likely stated as a question for what purpose?
"invisible question marks and parenthetical (you know? )'s
have been attaching themselves to the ends of our sentences? "
a-to make fun of the manner of speaking that the writer is criticizing maybe
b- to show that questions are always appropriate x wrong
c-to emphasize the speaker's confusion maybe
d-to show that the speaker does not know how to use punctuation xwrong

To make fun of the manner of speaking that the writer is criticizing

Explanation:

imparadis't in one anothers arms  

the happier eden, shall enjoy their fill  

of bliss on bliss, while i to hell am thrust,  

where neither joy nor love, but fierce desire,  

among our other torments not the least,  

still unfulfill'd with pain of longing pines;  

yet let me not forget what i have gain'd  

from their own mouths; all is not theirs it seems:  

one fatal tree there stands of knowledge call'd,  

forbidden them to taste: knowledge forbidd'n?  

suspicious, reasonless. why should their lord  

envie them that? can it be sin to know,