Answer: First option
Step-by-step explanation:
The distance between two points is calculated using the following formula
[tex]d=\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}[/tex]
In this case we have the following points
W(0, 8) and X(0, 12)
Therefore
[tex]x_1 = 0\\x_2 = 0\\y_1=8\\y_2=12[/tex]
[tex]d=\sqrt{(0-0)^2 +(12-8)^2}[/tex]
[tex]d=\sqrt{(12-8)^2}[/tex]
[tex]d=\sqrt{(4)^2}[/tex]
[tex]d=4[/tex]
