Final answer:
Design view allows you to modify the report while seeing the data.
Step-by-step explanation:
The option that allows you to modify the report while seeing the data is the "Design view." In Microsoft Access or similar database management systems, Design view enables users to modify the layout, structure, and design of the report while still being able to see the data.
In Design view, users have the flexibility to add or remove fields, adjust formatting, set properties, apply filters, and make various design changes to the report. This mode offers a comprehensive interface where adjustments can be made directly, offering a real-time view of how those modifications affect the displayed data.
While "Print Preview" provides an overview of how the report will appear when printed or viewed, and "Report view" displays the report's data without allowing modifications to the layout, "Design view" specifically caters to modifying the report's design elements while having access to the underlying data.