Which stem-and-leaf plot represents the data 10, 70, 37, 65, 88, 86, 70, 10, 15, 15, 15?

We can eliminate choice C because it adds an 87, which we do not have in our list of numbers. We can also eliminate A because we have three 15's, and that one only shows one. B also obviously is not the answer. So go with D.