When creating an extrude, what curve rule will ensure that you select all of the sketch curves?

To ensure that you select all of the sketch curves when creating an extrude, the correct approach is to utilize the "Feature Curves" rule. This rule is designed to identify curves that form a coherent boundary or are intended for feature creation. It encompasses both closed and open curves that are necessary to define the shape for extrusion.

"Feature Curves" will allow you to efficiently select all relevant sketch lines, arcs, and other sketch entities that contribute to the extruded feature. This is especially useful in complex sketches where various curves may exist, as it streamlines the selection process by eliminating unnecessary elements that do not contribute to the desired 3D feature.

In contrast, while "All Curves" might suggest a broader selection including everything in the sketch, it may not specifically ensure the relevance of those curves for extrude purposes. "Closed Curves" and "Open Curves," on the other hand, do not facilitate the selection of the complete set of curves when the sketch consists of both closed and open entities. Therefore, "Feature Curves" effectively captures the necessary elements without missing any important parts for the extrusion process.