Case reference and data reference are specialized versions of the query field type. A query field allows users to select a value from a list of values that are retrieved from a data source, such as a data page or a report definition. A case reference field is a query field that uses a report definition as a data source and displays cases that match a specified condition. A data reference field is a query field that uses a data page as a data source and displays values from a data type or an external system. Reference: https://community.pega.com/knowledgebase/articles/user-interface/86/creating-query-fields

This answer is correct because it is the earliest opportunity to configure a user view for a step in a case life cycle in App Studio. A user view is a form that displays fields and controls for users to enter or view data related to a case or an assignment. In App Studio, you can configure a user view for a step after you add that step to the case life cycle by clicking on the View icon next to the step name. Reference: https://academy.pega.com/library/87/pega-certified-business-architect-pcba-87v1 (Module 9: User Interface)

Pega Mobile Preview is a feature that allows you to view and interact with your Pega application on a mobile device without installing the app. It helps you to test the user interface and functionality of your app on different devices and screen sizes. Reference: https://community.pega.com/knowledgebase/articles/pega-mobile/86/using-pega-mobile-preview

These answers are correct because they achieve the behavior of creating a case ID only when the customer chooses to make changes to their membership. Temporary cases are cases that are not stored in the database until a Persist case step is reached in the case life cycle. This way, the case can be abandoned without creating any records or consuming any resources. Reference: https://academy.pega.com/library/87/pega-certified-business-architect-pcba-87v1 (Module 4: Case Design)