Which way of representing a molecule best shows its 3 dimensional shape?

The best way to represent a molecule's three-dimensional shape is through a space-filling model or a ball-and-stick model. The space-filling model illustrates the relative sizes of the atoms and their spatial arrangements, providing a clear view of the molecular volume. In contrast, the ball-and-stick model emphasizes the bonds between atoms, helping to visualize the angles and arrangement in space. Both models effectively convey the 3D structure but serve different purposes in molecular visualization.