It is measurement of the line from the perimeter to the center.
The correct option would be the 4th option
The best way to order from least to greatest is to make all the denominators equal so find the Lowest Common Multiple of all the denominators:
LCM= 24
2/4 (times 6) = 12/24
2/3 (times 8) = 16/24
2/8 (times 3) = 6/24
2/6 (times 4) = 8/24
Now you can easily order which is lowest to greatest (REMEMBER TO SIMPLIFY BACK TO ORIGINAL FRACTIONS WHEN ORDERING)
2/8, 2/6, 2/4. 2/3
Hope this helps! :D
