Final answer:
Authentication is the process of verifying a person's identity on a computer system.
Step-by-step explanation:
The correct answer to the question is authentication (option b).
Authentication refers to the process of verifying that a person is who they claim to be on a computer system. It involves confirming the identity of a user by requesting and verifying credentials such as usernames and passwords. This helps ensure the security and integrity of computer systems and protects against unauthorized access.
For example, when you log into a website or application using your username and password, the system is authenticating your identity to verify that you are the legitimate user.