In a CDS view definition, which annotation is used to add a label to a field?

In a Core Data Services (CDS) view definition, the annotation used to add a label to a field is @EndUserText.label. This annotation allows developers to specify a descriptive label for a field that will be displayed in the user interface (UI), helping end-users understand the purpose of the field more easily.

By using @EndUserText.label, you ensure that the label is user-friendly and contextually appropriate, which is important for usability in applications leveraging the CDS views. This practice enhances the overall user experience by providing clear and meaningful information about the field's content.

The other annotations mentioned serve different purposes or are simply incorrect in the context of labeling fields in CDS views. Therefore, @EndUserText.label is the correct choice for defining labels within a CDS view.