If you need to make a duplicate solid body to modify, what command would you use?

Using the Copy Body command is the appropriate choice for duplicating a solid body that you intend to modify. This command allows you to create an exact replica of the selected body in the same or a different location within your design. After copying the body, you can then make independent modifications to the duplicate without affecting the original, which is essential in a design context where variations might be needed for different design iterations or analyses.

When you use the Copy Body command, the new body retains all the properties of the original, such as its geometry and attributes, giving you a solid foundation for further modifications. This flexibility facilitates experimentation and design optimization without the risk of altering the original model inadvertently.

The other commands listed have different purposes. For instance, Extract Geometry - Body is used primarily to create a reference or to extract specific features from an existing model rather than duplicating the entire solid. The Clone Solid command also serves a duplication function, but it typically creates linked instances; any modification to the clone can affect the original, which may not be desirable in all cases. As for the Mirror Body command, it is utilized to create a mirrored copy of a body based on a specified plane, which does not apply when the intent is straightforward duplication for modification.