Final answer:
The default level of access an administrator should grant to new users in a database is 'No access' (D), following the principle of least privilege. This approach minimizes security risks by limiting user permissions to only what is necessary for their role.
Step-by-step explanation:
When an administrator is granting permissions to a database, the default level of access they should grant to new users is typically the least privilege necessary to perform their job functions. The best practice in most cases is to provide No access by default and then to gradually grant specific permissions as needed on a case-by-case basis. This approach follows the principle of least privilege, which helps to minimize potential security risks by limiting access rights for users to the bare minimum they need to perform their work.
To answer your question, the default level of access an administrator should grant to new users is D. No access.