What defines a "Part Assembly" in SolidWorks?

A "Part Assembly" in SolidWorks is defined as a combination of individual parts that collectively create a functional assembly. In this context, the assembly allows you to bring together various components, which can be different parts designed separately, and combine them to represent how they interact within a system.

This definition underscores the idea that an assembly is not just a collection of parts, but rather a cohesive whole where each part is placed in a specific orientation and relationship to the others. This functionality is crucial for engineers and designers, as it enables them to visualize, evaluate, and simulate how the parts will work together in the final product.

The other options do not accurately capture what a "Part Assembly" is. For instance, a file containing only sketches for parts is focused on the design stage and does not represent an assembly. A library of standard components pertains to the availability of ready-to-use parts rather than how they come together in an assembly. Lastly, a document for analyzing part performance implies a focus on testing and performance evaluation rather than the actual assembly of parts.