Which sentence correctly incorporates the direct quotation into the paper?

The sentence that correctly incorporates the direct quotation into paper is C. According to Lizbeth Conner of Abolishment Now, "the costs associated with death penalty verdicts are three times higher than those associated with a sentence of life without parole".

Explanation: Option C. is the only one who follows the guidelines on how to incorporate a direct quotation correctly in a piece of writing because it includes all of the words taken from another source (Lizbeth Conner of Aboishment Now) inside quotation marks. In contrast, option A. does not include quotation marks around those words and options B. and D. include the quotation marks but only around some of the words. In that way, the only sentence that correctly incorporates the direct quotation into paper is C.