Which feature allows for the duplication of existing parts in an assembly?

The correct feature for duplicating existing parts in an assembly is the "Pattern" feature. This feature allows users to create multiple instances of a component based on a specified arrangement or layout. Patterns can be created in linear, circular, or even sketch-driven forms, enabling efficient reproduction of parts within an assembly without the need to manually place each one.

By using the Pattern feature, not only is it easy to manage the duplication of parts, but it also ensures that the instances maintain a link back to the original component. This way, any changes made to the original part are automatically reflected in all instances, maintaining consistency throughout the design.

The other options, while related to duplication in some manner, do not serve the same broad functionality. For example, the "Mirror Part" feature is intended for creating a mirrored copy of a part, which may not fit every instance requirement depending on the desired layout. The "Instance" feature is often used in the context of assemblies with reference to how components are used, but does not directly address the act of duplicating parts. The "Copy Component" command creates a standalone copy rather than a linked one, potentially complicating future updates or modifications. Thus, the Pattern feature stands out as the best choice for