Which of the following conclusions can be supported by the information in this chart? (4 points)
voting rates (in percent) by educational attainment and age groups: 2008
18 to 24 years
25 to 44 years
45 to 64 years
65 years and older
less than high school
27.0
29.2
40.3
51.9
high school graduate
39.9
44.8
61.1
68.5
some college or associate's degree
56.6
63.8
74.3
79.1
bachelor's degree or more
70.2
76.7
81.1
82.0
source: u. s. census bureau, current population survey, november 2008
a) participation in elections increases as education level increases across all age groups.
b) education level was a significant factor in the outcome of the 2008 election.
c) decreasing the drop-out rate among high school students will positively affect voting rates.
d) increasing access to higher education will decrease citizens' participation in government.