Which of the statements is true when creating or moving the defining points of a Studio Spline?

When creating or moving the defining points of a Studio Spline, the spline curve dynamically updates in real time. This means that as you adjust the defining points, the shape of the spline curve changes immediately to reflect those adjustments. This real-time feedback allows designers to visualize the impact of their modifications instantly, facilitating a more intuitive and efficient design process.

In contrast, the other options suggest limitations or conditions that do not apply to the Studio Spline tool in NX. For example, the curve does not become fixed after adjustments, nor does it require manual updates after moving points. Additionally, there is no restriction that adjustments can only occur after the spline has been closed; modifications can be made at any time during the design process. This flexibility is a key advantage of using Studio Splines in NX, as it enhances the user's ability to refine their designs seamlessly.