Which of the following aspects of political structure in the U.S. might help explain the poor turnout of lower-income groups? 

A. the strong appeal of third-party candidates in the U.S.
B. the centrist appeal of the major parties
C. major-party disinterest in voter mobilization
D. the focus of major political parties on economic divisions in the populace
E. the failure of major parties to campaign in a public and visible manner

Answer: B