Which authentication approach requires more than two methods of verification?

The correct choice is multifactor authentication, which is characterized by its requirement of more than two methods of verification to validate a user's identity. This approach enhances security by combining multiple factors classified as something you know (like a password), something you have (like a security token or smartphone), and something you are (like a fingerprint or facial recognition).

By utilizing multiple factors, multifactor authentication significantly reduces the likelihood of unauthorized access, as an attacker would need to compromise multiple forms of verification, making it a robust defense mechanism against various threats such as phishing and credential theft.

On the other hand, single-factor authentication relies solely on one type of verification, making it less secure. Two-factor authentication specifically involves exactly two methods of verification, which while more secure than single-factor, does not meet the criteria of requiring more than two. Layered authentication is a broader term that could imply multiple forms of security but does not specifically define a requirement for more than two methods in the same way multifactor authentication does.