Biometric authentication is the strongest form of authentication.

• A. True
• B. Not necessarily
• C. Depends on context
• D. False

Answer: (D)

Biometric authentication is not automatically the strongest form of authentication. Its strength depends on how it’s used and what threat you’re defending against. Biometrics—something you are—can be very effective because it’s hard to share or guess, but it has notable drawbacks: it can be spoofed or bypassed with convincing replicas, there are false acceptance and false rejection risks, and biometric data, once stolen, can be difficult or impossible to revoke or change like a password. Because of these issues, relying on biometrics alone may leave gaps in security.

In practice, the strongest approach is often multi-factor authentication, combining biometrics with another factor such as a hardware security key or a password/PIN. This layered setup mitigates weaknesses of any single factor and provides stronger protection against credential theft and impersonation. So the statement isn’t universally true; context and design choices determine the actual strength.