In a recent poll, 71% of respondents reported that they cast votes in the most recent national election. Voting records show, however, that only 60% of eligible voters actually voted in that election.
Which of the following pieces of evidence, if true, would provide the best explanation for the apparent discrepancy?
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AThe margin of error for the survey was plus or minus five three percentage points
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BFifteen percent of the survey's respondents were living overseas at the time of the election
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CPrior research has shown that that people who actually do vote are also more likely to respond to polls than those who do not vote
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DMany people who intend to vote are prevented from doing so by last-minute conflicts on election day or other complications
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ESome people confused the national election with other recent elections when responding to the poll
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显示答案
正确答案: C