Which of the following is the most secure method of authentication? 

Answer options:

A. Biometrics
B. Username and password
C. Anonymous
D. Smart card

environment. It is the most secure method of authentication. Answer: B is incorrect. Username and password is the least secure method of authentication in

Biometrics is a method of authentication that uses physical characteristics, such as fingerprints, scars, retinal patterns, and other forms of biophysical qualities to identify a user. Nowadays, the usage of biometric devices such as hand scanners and retinal scanners is becoming more common in the business and he is not prompted for credentials.