The IT security team at a large company is implementing more robust authentication measures to safeguard sensitive data and systems. The team is exploring multifactor authentication (MFA) options to bolster security. The company deals with highly confidential information and requires a robust solution. The team has narrowed the choices and is evaluating which aligns best with their security needs. Which multi-factor authentication method utilizes unique physical characteristics of individuals to verify their identity?
a) Smart cards
b) SMS-based one-time passwords
c) Biometrics
d) Passwords and PINs