The option that is a platform independent authentication system that maintains adatabase of user accounts and passwords that centralizes the maintenance of those accounts is option A: RADIUS.
The client-server protocol and software known as RADIUS (Remote Authentication Dial-In User Service) enables remote access servers to connect with a central server in order to authenticate dial-in users and grant their access to the required system or service.
Therefore, A networking protocol called Remote Authentication Dial-In User Service (RADIUS) offers centralized authentication, authorization, and accounting (AAA) administration for users who connect to and use a network service.
Learn more about independent authentication system from
https://brainly.com/question/28240257
#SPJ1