Read the following argument made by a speaker at a parent-teacher conference: i'm a bank manager and parent of two high school students, so i know just how important financial literacy is for teenagers. college students today are graduating with an average student debt of $24,800, yet only 1 in 5 high schools nationwide are providing any type of financial education. it's time for springville high to start offering its students financial education that is personal, practical, and principled. which is the most effective characteristic of this argument? a. the use of repeating sounds to make the final point more memorable b. the use of stories to listeners understand his or her overall point c. the use of emotion to evoke sympathy from listeners about students d. the use of expert opinion to give the paragraph some additional authority