Which of the following cannot be selected to create Edge Blend features?

The correct answer is that Sketch Curves cannot be selected to create Edge Blend features. Edge Blends in NX are specifically designed to apply blends to edges of solid bodies or face edges that are part of a 3D geometric model. These blends help smooth transitions between surfaces, particularly in complex shapes or when preparing models for manufacturing processes such as injection molding.

Sketch curves, on the other hand, are 2D elements that exist within a sketch and do not represent edges or features within the 3D model. They serve a different purpose, primarily for defining the geometry that can later be extruded, revolved, or used to create features in a solid model. Since Edge Blend functionality is inherently tied to the geometry of solid models, it cannot be applied directly to 2D sketch curves.

Understanding the relationship between different elements in NX can help determine which features can be manipulated and which cannot, clarifying the role that each type of geometry plays in the modeling process.