Which of the Following Groups Make Up the Highest Voter

Which of the following groups make up the highest voter turnout in presidential elections in the United States?

A) Women who are motivated by gender-specific issues
B) Eighteen to twenty-five year olds who are excited to vote the first time
C) College-educated citizens, no matter what their social standing or ethnicity
D) Citizens who are lower on the socioeconomic scale and are dissatisfied with their living and/or working conditions.