Which property must be checked to enable the separate compiled code from the source file?

To enable separate compiled code from the source file in LabVIEW, the property that needs to be checked is "Separate compiled code." This property allows the LabVIEW environment to generate a compiled version of the VI that is stored independently from the source code. By enabling this setting, you can enhance performance, reduce loading times, and keep the compiled code isolated, which can be beneficial for deploying applications or libraries without needing to expose the underlying source code.

When "Separate compiled code" is checked, LabVIEW creates a binary representation of the design, which can significantly speed up execution and also allows for better management of the application. The other properties relate to different functionalities: "Allow debugging" pertains to enabling or disabling debugging features, "Embed compiled code" concerns including the compiled code within the VI file, and "Keep source private" deals with protecting source code from being accessed, but none directly relate to the separation of compiled code from the source.