Which of the following describes multi-factor authentication (MFA)?

Multi-factor authentication (MFA) is a security approach that enhances the protection of user accounts by incorporating two or more distinct forms of verification. These factors typically fall into three categories: something you know (like a password), something you have (such as a security token or smartphone), and something you are (which refers to biometric identifiers like fingerprints or facial recognition).

By combining these different forms of authentication, MFA greatly reduces the likelihood of unauthorized access. For instance, even if a malicious actor could guess or steal a password, they would still require the additional authentication factor to gain entry, thereby creating a much more robust security environment.

The other options, such as relying solely on a password, using only one verification method, or depending exclusively on biometric data, do not align with the principles of MFA, which specifically emphasizes a combination of multiple authentication methods for increased security.