Answer:
B
Explanation:
5, 6, 7, 8, 9, 9, 9, 10, 12, 14, 17, 17, 18, 19, 19
First find the median (middle number) of the data set. There are 15 numbers, so the middle number will be the 8th number in the set which is 10. This will represent the line in the middle of the box.
The only answer that has a median of 10 is letter B.