The best practice for securing access to sensitive data is to implement multifactor authentication (MFA), which combines multiple factors of authentication to enhance security.
* Option B (Biometrics + Device with a Personalized Code) uses two strong factors:
* Biometrics (something you are)
* A device with a personalized code (something you have)This combination significantly reduces the risk of unauthorized access.
* Option A (Randomized Code) is good but weaker than biometrics because it relies only on something you have.
* Option C (Passphrase) is single-factor authentication, which is susceptible to brute-force attacks.
* Option D (One-time Code + Push Notification) is useful, but email-based authentication can be vulnerable to phishing and MITM attacks.