What does the “Insert Boundary” command accomplish in SolidWorks?

The "Insert Boundary" command in SolidWorks is designed to generate a boundary surface derived from defined edges or sketches. This feature is particularly useful in surface modeling, where users may want to create complex shapes and forms that adhere to specific contours. By selecting existing edges or applying sketches, the command allows for the creation of a surface that is constrained by the boundaries defined by those selections, thus enabling the precise definition of surface features in the design process.

In the context of surface modeling, this command is valuable for crafting intricate designs in industries such as automotive or aerospace, where aerodynamic shapes are often needed. The resulting boundary surface can then be utilized in a variety of ways, such as creating solid features through thickening or using it as part of a solid model.

The other choices do not accurately describe the functionality of the "Insert Boundary" command. For instance, forming a new assembly or converting 2D sketches into 3D models involves different tools and commands within SolidWorks, while applying boundary conditions is related to simulation settings rather than surface creation. Thus, the primary function of the "Insert Boundary" command is indeed to create boundary surfaces from defined edges or sketches, making option B the correct choice.