For a case type that facilitates booking the dining room for events, with additional steps required if the customer opts for catering, structuring the case flow to adapt to customer choices is essential.

A. Create a check box for customers to indicate catering preference. Add a decision shape: This setup allows the case flow to branch based on whether catering is required. If the check box is selected, the flow can proceed to steps for selecting menu preferences and scheduling a menu tasting appointment; if not, it can move directly to providing a rental rate quote.

B. Configure menu preferences and appointment date fields with a visibility condition: This ensures that these fields are only displayed when catering is chosen, maintaining a streamlined and relevant user experience. Visibility conditions based on the catering check box selection dynamically adjust the form to match customer requirements.

Creating parallel processes for menu selection and rental rate quoting (C) might imply simultaneous progression, which does not align with the conditional nature of these steps. Making the menu selection and tasting appointment process a case-wide optional action (D) could allow it to be bypassed, potentially conflicting with the specified requirement for catering requests.