Answer:
B) 14
Step-by-step explanation:
A stem and leaf plot is a method to plot data where the data is spilt into stems (largest digit) and leaves (the smallest digit).
Drivers who travel below 80 miles per hour are:
5 is the stem and 4, 6, 9 are the leaves. So, the data is:
54, 56, 59
6 is the stem and 2, 2, 3, 4, 8 are the leaves. So, the data is:
62 ,62, 63, 64, 68
7 is the stem and 0, 0, 1, 2, 2, 3 are the leaves. So, the data is:
70, 70, 71, 72, 72, 73
14 drivers.