Question

choose the 2d shape created from the cross section. rhombus rectangle square triangle

Explanation:

The 3D shape appears to be a prism (possibly a triangular prism or a parallelepiped - like shape). When a cross - section is taken parallel to the faces (or in a way that cuts through the prism), if the original prism has rectangular - like faces in the cross - section area, the cross - section should be a rectangle. A rhombus has all sides equal but angles not necessarily right angles, a square has all sides equal and right angles (but the cross - section here doesn't seem to have the side - equality constraint of a square), and a triangle would be the cross - section if we cut through a vertex and the opposite side, which is not the case here. So the 2D shape from the cross - section is a rectangle.

Answer:

Rectangle