Which of the following describes what DDL statements can do?

• A. They cannot modify existing structures
• B. They can create, modify, or drop structures
• C. They can only read data
• D. They are used to control user permissions

Answer: (B)

DDL statements are about defining and managing the database schema. They create new structures such as tables and views, modify existing ones with commands like ALTER, or remove structures with DROP. Because their job is to change the structure itself, they can create, modify, or drop structures. They don’t read or modify the data inside tables (that’s DML), and they don’t manage permissions (that’s DCL). So the description that fits best is the ability to create, modify, or drop structures.