What two options are used to define the number and spacing of feature patterns?

The correct choice emphasizes the importance of defining feature patterns in a CAD application like Solid Edge. "Fit" and "Fixed" are terms that relate to the constraints and parameters assigned to features in a pattern.

Using "Fit" typically allows the user to intelligently allocate space and optimize the distance between features based on the dimensions of the overall design. It adjusts the spacing dynamically to fit the elements within the designated area.

On the other hand, "Fixed" refers to a method where the spacing between features remains constant and is not influenced by surrounding elements or adjustments in dimensions. This can be particularly useful when a specific, unchanging distance is required between features for design functionality or aesthetic purposes.

Together, these options provide the necessary controls to accurately define both the quantity and the arrangement of features in a pattern, ensuring that designs can be created efficiently and consistently. The other options, while relevant in different contexts, do not specifically focus on the defining aspects of feature patterns in a way that fits the question's context.