Answer:
B) Checkers Club
Explanation:
The spread is the difference between the minimum and the maximum. Those extreme values are indicated by the dots at the ends of the "whiskers" in the "box and whisker" plot.
Chess club extends from 8 to 18, so the spread is 18 -8 = 10.
Checkers club extends from 6 to 17, so the spread is 17 -6 = 11. This is a greater value than 10.
Checkers club has the greater spread.