https://www.google.com/search?q=how+to+use+sic&oq=how+to+use+sic&aqs=chrome.0.69i59.3870j0j7&sourceid=chrome&ie=UTF-8
It isn't C.
Identify the sentence that is correctly punctuated.
a) "Running the front line of the cafeteria isn't exactly rocket surgery" (sic), said Jerry.
b) "Running the front line of the cafeteria isn't exactly rocket surgery" [sic], said Jerry.
c) "Running the front line of the cafeteria, isn't exactly rocket surgery" [sic] said Jerry.
d) "Running the front line of the cafeteria, isn't exactly rocket surgery," [sic] said Jerry.
i think C
4 answers
and read up on how to punctuate direct quotes, while you're at it.
B
The correct answer is B. In direct quotes, [sic] should be within the quotation marks and surrounded by brackets.