Question

every possible cross - section of a three - dimensional figure is a circle. what is the figure?
cone
cylinder
circle
sphere

Explanation:

A cone's cross - sections can be triangles (when cut through the vertex) or circles (when cut parallel to the base). A cylinder's cross - sections can be rectangles (when cut parallel to the axis) or circles (when cut perpendicular to the axis). A circle is a two - dimensional figure. A sphere, no matter how it is cut (any cross - section), the resulting shape is a circle.

Answer:

sphere