48.
(C).
The argument presents a discrepancy between the percentage of
survey respondents who reported that they voted in an election (71%) and the
percentage of eligible voters who did vote in that election (60%). An
explanation of a GRE discrepancy explains why the apparent conflict does not
apply.
(A) If the margin of error is ± 5%, then the 71% figure could be as low as
66% (or as high as 76%). This accounts for less than half of the discrepancy
between 71% and 60%.
(B) This choice does not address the stated discrepancy between the
percentage of voters who said that they voted and the percentage of voters
who actually did vote. No information is given concerning residency
requirements so this information is irrelevant.
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