An organization is updating an Application Programming Interface (API) to support requests coming from mobile...

Require that the user supplies their credential to access confidential documents.

Require a Virtual Private Network (VPN) connection to the organization's network to access confidential documents.

Implement Security Assertion Markup Language (SAML) to validate the identity of the user requesting access to confidential documents.

Implement Open Authorization (OAuth) 2.0 to require the users to request permission to access confidential documents.