B.
It is from a discrete data set because the number represents a count.
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This question is solved classifying a variable as discrete or continuous.
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In this question, the variable is the number of votes.
The number of votes represent a count, that is, a candidate can have 0, 1, a thousand, ... votes, that is, the number of votes cannot be decimal, thus, it is a discrete variable, and thus, the correct option is:
B.
It is from a discrete data set because the number represents a count.
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