It is given that the lengths of OA and OC are equal. The point symmetric to point C with respect to the point O is ___
A
Symmetric points are always equidistant from the line of symmetry.
The points A and C are equidistant from the point O. In other words, the distance of point A from O is the same as that of point C from O.
OA = OC
∴ The point symmetric to point C is A.