Which type of object can you add a rib into?

The correct choice is the solid body because a rib is a feature typically used in solid modeling to add structural support, improve strength, or reduce weight in a design. In Siemens NX, when working with solid bodies, you can create ribs by defining a profile and then specifying how it extends or intersects with the solid body.

Ribs are specifically designed to enhance the integrity and functionality of a solid shape, making them ideal for applications like cases, housings, or other components that require reinforcement. Utilizing ribs within a solid body allows for more optimized designs in both aesthetics and material usage.

In contrast, sheet bodies, datum planes, and assembly components are not appropriate candidates for rib features. Sheet bodies are thin-walled structures that are designed differently and don't support the same types of detailing or strengthening features like ribs. Datum planes serve as reference geometry and do not have physical mass or structural characteristics to accommodate a rib, while assembly components pertain to the configuration of multiple interconnected parts rather than individual solid bodies conducive to this feature.