Answer:
Option D is the correct answer.
Step-by-step explanation:
(2,9) and (2,5) are separated by a distance of 4 units because 9-5 is 4.
put them in least to greatest, so that would be: 0,0,1,1,1,1,2,3,3,6,8,7,8, then do the greatest minus the lowest: 8-0=8
