20) Which is the strongest revision of the following sentence? Providing students with a challenging curriculum, American University is able to also provide students with talented teachers and student body activities that are unparalleled by other secondary institutions. A) Providing students with a challenging curriculum, American University is able to also provide students with talented teachers and student body activities that are unparalleled by other secondary institutions. B) American University is able to provide students with challenges from a difficult curriculum, a good teacher, and many students who are active in activities unparalleled by any other secondary institution. C) Unparalleled by any other secondary institution, American University is able to provide students with a challenging curriculum, teaching experiences, and continual activities from an active student body. D) American University is able to provide students with a challenging curriculum, talented te