The correct answer is D. Tables.
A table is a database object that stores data in rows and columns. Each row represents a single record, and each column represents a single field. Tables are the foundation of any database, and they are used to store all of the data in the database.
Forms are used to enter data into tables. They provide a user-friendly interface for entering data, and they can be used to validate data before it is entered into the database.
Reports are used to view data from tables. They can be used to generate summaries of data, or they can be used to create custom reports that show exactly the data that you want to see.
Queries are used to retrieve data from tables. They can be used to select specific rows or columns from a table, or they can be used to join data from multiple tables.
In conclusion, tables are the database object that hold data. Forms, reports, and queries are used to interact with data in tables.