The square represents a plane section of a three-dimensional figure. What figure could be sliced to produce this plane section? Show your work.

One figure that could be sliced to produce a square plane section is a cube.

To show this, we can imagine a cube with all sides of equal length. When a plane is passed through the cube in a way that it intersects all the edges at right angles, the resulting plane section will be a square. This can be visualized by imagining a cube being cut by a straight plane passing through one corner of the cube.

Therefore, a cube can be sliced to produce a square plane section.