Identity

The act of claiming who or what we are

The process of verifying one's identity

The process of accessing a service with a username and password (correct)

The act of providing two forms of ID for a service

Identity is the process of verifying one's authentication

Authentication is the act of providing one's identity

Identity is the same as authentication

Identity is who or what we claim to be, while authentication is the act of providing who or what we claim to be (correct)

The act of providing two forms of ID for a service (correct)

The process of verifying one's identity

The process of accessing a service with a username and password

The act of claiming who or what we are