A box-and-whisker plot labeled ages of tv watchers for the code is shown. from left to right, the first point is at approximately 9. the second point and beginning of first box is at approximately 24. the third point and end of first box, beginning of second box, is at approximately 28. the fourth point and end of second box is at approximately 34. the fifth point is at approximately 54.
which value is the best approximation for the range in ages for the middle 50% of viewers?
a. 10
b. 20
c. 35
d. 45