every possible cross - section of a three - dimensional figure is a circle. what is the figure?\no cone\no…

Brief Explanations:

A sphere has the property that any cross - section through it is a circle. A cone's cross - sections can be triangles, ellipses etc. depending on the cut. A cylinder's cross - sections can be rectangles if cut parallel to the axis. A circle is a two - dimensional figure, not a three - dimensional one.

Answer:

sphere