Final answer:
A plane slicing through a cube can result in a hexagon, rectangle, or square, but not a triangle.
Step-by-step explanation:
A plane slicing through a cube can result in a hexagon, rectangle, or square, but not a triangle.
This is because a triangle is formed by three sides, and a cube has more than three faces. When a plane slices through a cube, it will always intersect at least four of its faces, resulting in a shape with at least four sides.
Therefore, the shape that could NOT be the result of a plane slicing a cube is triangle (d).