The number of dots gives the frequency of each number over which the dots appear.
The tabular representation of the dot plot is as shown below
Number | Frequency
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0 | 2
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1 | 3
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2 | 3
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3 | 1
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4 | 2
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6 | 1
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7 | 2
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8 | 1
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The only option that matches the table is option A
From the table 0 appears twice, 1 three times, 2 three times, 3 once, 4 twice, 6 once