Which of the following expressions represent the distance between 5/2 and 4 7/8 on a number line?

the question does not present the options, but this does not interfere with the resolution

we know that
The distance between two points on a number line can be found by taking the absolute value of the difference between those two points.

let
a> (5/2)> multiply by (4/4)> 20/8
b> 4 7/8> ((4*8+7)/8> 39/8

the distance  between a and b= absolute value (b-a)
or
the distance  between a and b= absolute value (a-b)

therefore
the distance  between a and b= absolute value (b-a)
absolute value (b-a)> absolute value (39/8-20/8)
absolute value (19/8)> 19/8

the distance  between a and b= absolute value (a-b)
absolute value (a-b)> absolute value (20/8-39/8)
absolute value (-19/8)> 19/8