OE
1. In the passage above, what roles do the highlighted sentences serve?
This Logic question asks for the role of the two highlighted sentences. The first highlighted sentence introduces the concept of xenotransplantation, explaining what it is and providing historical context. In the second highlighted sentence, the author presents an opposing ethical view of the technology but never takes a definite side on the ethics of using it. Therefore, neither sentence is an argument of the author’s. Eliminate (B) and (C) because the first sentence is neither an argument nor an example. Now determine whether the remaining choices correctly identify the role of the second highlighted sentence. This sentence describes the criticism leveled by the animal welfare groups. (E) is the correct answer. To get there by process of elimination, note that the second highlighted sentence does not restate anything, so (A) is incorrect. The second highlighted sentence also does not directly analyze anything stated in the first sentence, so (D) is likewise incorrect.
Answer: E