Answer:
C) There is one cluster at 12, 13, 14, and 15.
Step-by-step explanation:
I think this because at 12, 13, 14, and 15 there are a larger amount of dots together, than with 10 and 11. Clusters form when there are large numbers of objects near each other. This is represented by 12, 13, 14, and 15.
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