What feature would you use to create a 3D model from a 2D sketch?

To create a 3D model from a 2D sketch in Fusion 360, the extrude feature is used. The extrude command takes the geometry defined in the 2D sketch and extends it along a specified direction and distance, effectively creating a solid 3D object. This transformation from a 2D profile to a 3D shape is fundamental in CAD modeling, allowing designers to develop complex objects and parts from simple sketches.

The other options provided serve different purposes: scaling modifies the size of an object, which doesn’t create a new 3D form but rather adjusts an existing one. Mirroring creates a symmetrical counterpart to a selected sketch or body but does not contribute to the 3D generation of a model from scratch. Filleting, on the other hand, rounds off the edges or corners of a 3D body, which is an operation that occurs after the 3D model has already been created. Therefore, extruding is the critical feature for transforming a 2D sketch into a solid 3D model.