<u>Answer:</u>
B. mode
<u>Step-by-step explanation:</u>
We are given the following data set for the number of skips every time Jake skipped a stone onto a pond:
3, 2, 1, 3, 2, 5, 4, 1, 3, 3, 4, 1, 5, 4, 2
It is a good idea to arrange the data set into ascending order just to be more clear about it:
1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5
To find the most common number of skips, Jake should use a measure called mode which tells us about the value that appears most often, which in this case is 3.