The correct answer is B. Design.
The Design view is used to create and modify the sections of a form. It allows users to add, delete, and rearrange sections, as well as add and remove fields from each section.
The Datasheet view is used to view and edit the data in a form. It does not allow users to create or modify the sections of the form.
The Form view is used to view and enter data in a form. It does not allow users to create or modify the sections of the form.
The Layout view is used to preview the appearance of a form. It does not allow users to create or modify the sections of the form.