The Allow Zero Length property allows a user to enter a zero-length ("") string in a field to indicate that there is no value for that field.
Answer C is incorrect. The Append Only property is mainly used for memo fields. When this property is set to 'Yes', it creates a field value history to add new text to the field.
Answer D is incorrect. The IME Mode property is related to East Asian languages.
Answer B is incorrect. The Input Mask property is used to specify that the field value should conform to the pattern set by the mask.

The Records group allows a user to save, delete, and add new records to an Access form. This group includes commands that are required to display total, check spelling, freeze and hide columns, and change the row height and cell width when the form is opened in the Datasheet view.
Answer A is incorrect. The Clipboard group includes the Cut, Copy, Paste, and Format Paint commands.
Answer C is incorrect. The Find group allows a user to find and replace data in the datasheet.
Answer D is incorrect. The Text Formatting group allows a user to change the appearance of the datasheet in the Datasheet view. It includes the Font, Size, Bold, Italic, and Color commands.

In order to accomplish the task, you should use the Split Form tool. It is used to create a form that displays a Form view and a Datasheet view of the same data at the same time.

The various functions that an Access user can perform using the External Data ribbon are as follows:
To import, export, and link external data available in various formats
To assemble and update data via emailed HTML forms
To save import and export specifications
To work with SharePoint lists while offline
To move selected objects or the complete database to a SharePoint site

Answer C is incorrect. The various functions that an Access user can perform using the Home ribbon are as follows:
To select the Datasheet, Form, Report, Layout, and Design views
To perform Clipboard operations
To specify font properties
To format memo fields with HTML
To refresh, add, delete, save, sort, filter, find, and spell check records Answer B is incorrect. The various functions that an Access user can perform using the Create ribbon are as follows:
To create a new blank table, a table from a template in the Datasheet view, or an empty table in the Design view To create a SharePoint list and a table that links to that list To create a form or report bound to a table or query that is selected in the Navigation pane To create a new query, macro, module, or class module Answer A is incorrect. The various functions that an Access user can perform using the Database Tools ribbon are as follows:
To open the VBA editor for a module
To run a macro, create a shortcut menu from a macro, and convert a macro to VBA To open the Relationships window to create or edit table relationships To show or hide the Object Dependencies pane, property sheet for an object, and message bar To run the Database Documenter, Performance Analyzer, and Table Analyzer Wizard To move tables to a back-end Access database or upsize tables and queries to SQL Server 2005 or later To run the Linked Table Manager for linked Access tables To create and edit a switchboard with the Switchboard Manager To encrypt the database and set a database password To manage Access add-ins To make an execute-only database by stripping out VBA source code

The following are required for establishing referential integrity between two tables:
The common field is the primary key of the primary table.
The related fields contain the same format.
Both tables are related to the same database.
Answer D is incorrect. In order to establish referential integrity, it is required that both tables have the same format.