Final answer:
The correct answer to the question is c. Database administrator, as they are responsible for managing and securing the database environment.
Step-by-step explanation:
The role that authorizes access to database, coordinates, monitors its use, acquires software and hardware resources, and ensures the security of the data is the database administrator. The database administrator (DBA) is responsible for the overall management of the database environment, ensuring its performance, reliability, and security. They are crucial in an information society, where data management is key to organizational success. In contrast, a database enduser interacts with the database through applications, while a database designer focuses on the structure and design of the database. Therefore, the correct answer is c. Database administrator.