The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.
Jim Smyth may be a charismatic speaker, but it seems to be counterproductive to have a high school dropout as mayor in a town where illiteracy functionally affects 37 percent of the electorate.（）
A. where illiteracy functionally affects 37 percent of the electorate
B. in which functionally the electorate is 37 percent illiterate
C. where 37 percent of the electorate are functionally illiterate
D. which has 37 percent of the electorate functionally illiterate
E. where, of the electorate, 37 percent of them functionally are illiterate