Which is an advantage of 3D printing?

One significant advantage of 3D printing is its ability to create high-quality, complex shapes that are often difficult or impossible to achieve through traditional manufacturing methods. This technology allows for intricate designs with precise details, enabling the production of customized parts and prototypes that are both lightweight and strong. Because it builds objects layer by layer, there are fewer constraints on geometric complexity, which expands the possibilities for design innovation in various fields, including engineering, architecture, and healthcare.

The other options highlight disadvantages associated with 3D printing, such as the need for less labor compared to traditional methods, potential for lower quality outputs in certain cases, and relatively slower production speeds compared to mass manufacturing techniques.