What feature can be used to create stiffening geometry to support other features?

The function that is best suited for creating stiffening geometry to support other features is the Rib feature. Ribs are specifically designed to add strength and rigidity to a component without significantly adding to its weight. This makes them ideal for reinforcing structures, such as frames or panels, in various engineering applications. Ribs can be created in many orientations and dimensions, allowing engineers to tailor the support precisely where it is needed.

Using ribs helps to distribute loads and maintain structural integrity, especially in areas where other features, such as surfaces and holes, may compromise strength. The Rib feature is a targeted way to enhance the performance of designs by allowing for the addition of stiffness along a specific direction, while also providing the flexibility of design.

Other options, while useful in different contexts, do not specifically focus on the task of creating stiffening geometry in the same targeted manner as ribs do. Shell features are used to create hollow structures, Extrude is a basic modeling function used for creating solid geometry, and Gussets are typically triangular reinforcements, which while they can provide support, do not offer the same versatility for stiffness as ribs directly. Thus, the Rib is the most appropriate and specialized solution for the need described in the question.