In SolidWorks, which of the following describes a "Sketch"?

A "Sketch" in SolidWorks is best described as a 2D drawing used for creating features. When working in SolidWorks, a sketch is the fundamental building block for creating 3D models. It consists of lines, arcs, circles, and other 2D shapes that can be defined with dimensions and constraints. These sketches are typically used to define the profiles or outlines for various features such as extrudes, revolves, and cuts, ultimately contributing to the 3D geometry of a part.

By utilizing sketches, users can precisely control the shape and size of their models before employing features that convert those sketches into 3D forms. This process is essential in solid modeling because it allows for changes and adjustments to be made at an early stage of design, promoting efficiency and accuracy. Sketches can also be reused and referenced in other sketches or in the creation of assemblies.

The other options describe different aspects of SolidWorks. A representation of a 3D object pertains to the final products created through features derived from sketches, while a collection of parts in an assembly refers to how multiple components are brought together in a SolidWorks project. A template for sheet metal designs focuses on specific design settings and standards rather than the foundational sketches used for modeling.