Answer:
Point X
Explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the photo
My answer:
We need to understand what the the center of a circle.
The center of a circle is the point that the distance from it to other points lie the circle line are equal.
In the given photo, point Y, Z or W are the ones lie on the circle line, only X is different from them.
Hope it will find you well.