Which method enhances security for user information by validating their identity?

The method that enhances security for user information by validating their identity is authentication. Authentication is the process through which a system verifies the identity of a user, ensuring that users are who they claim to be before granting them access to sensitive data or functionalities. This typically involves checking credentials such as usernames and passwords, or using more advanced techniques like biometric recognition or two-factor authentication.

In contrast, while authorization measures what an authenticated user is allowed to do (such as access certain resources or perform specific actions), it does not inherently validate the user's identity. Role management defines the permissions associated with different user roles, but it follows successful authentication processes. Session control relates to managing active user sessions and ensuring that they are secure but does not directly deal with identity validation. Therefore, authentication primarily addresses the critical aspect of establishing and verifying the user's identity, making it the correct choice.