Answer:
A.
[tex]5[/tex]
Step-by-step explanation:
According to the graph ;
[tex]x_1 =4\\y_1 =2\\x_2 =8\\y_2 =5\\\\d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\ \\d = \sqrt{(8-4)^2+(5-2)^2}\\ \\d = \sqrt{(4)^2 + (3)^2}\\ \\d = \sqrt{16+9}\\ \\d = \sqrt{25} \\\\d =5[/tex]
