Answer:
C) 21
Step-by-step explanation:
The middle column represents the tens place, while the column on the left is the ones place. Range is the difference between the highest number and the lowest number.
The lowest number for road A is 29, the 2 from the middle column and 9 from the left. The largest number is 50, the 5 from the middle column and 0 from the left column.
50 - 29 = 21