Considering the available options, the sentences that include a proper MLA parenthetical citation include "Mahoney states that "the needs of speakers drive language change" (nsf.gov)."
MLA parenthetical citation is the citation method that utilizes the author's last name, the page number, or other relevant source information in parentheses from sentences used.
Hence, in this case, it is concluded that the correct answer is options A, E, and F.
Learn more about MLA Parenthetical citation here: https://brainly.com/question/8789070