What does the "Extrude" feature do in SolidWorks?

The "Extrude" feature in SolidWorks is primarily used to create solid 3D shapes from 2D sketches. This operation involves extending the area defined by a 2D sketch along a straight line perpendicular to the sketch plane, resulting in a three-dimensional solid body. When a user selects a 2D profile and applies the extrude function, they can specify the depth of the extrusion, which ultimately provides control over the final geometry.

This capability is fundamental in SolidWorks, allowing for an efficient transition from 2D designs to fully realized 3D models. It serves as a stepping stone for further modifications and refining of the part, such as adding features or performing additional operations like cuts or fillets. The other options presented do not embody the core function of the extrusion; they refer to different operations or analyses that are unrelated to the creation process of 3D solid shapes from sketches.