Which answer best describes the authentication component of access control?

Authentication is the validation or proof that the subject requesting access is indeed the same subject who has been granted that access.

Authentication is the process of creating and maintaining the policies and procedures nec$$essary to ensure proper information is avail$$able when an organization is audited.

Authentication is the process of determin$$ing who is approved for access and what re$$sources they are approved for.

Authentication is the method a subject uses to request access to a system.