Comprehensive and Detailed Explanation:
This is an example ofMulti-Factor Authentication (MFA)because it requires:
* Something you know(username/password)
* Something you have(a phone-generated passcode)
Breakdown of Options:
* A. SSO (Single Sign-On)- Allowsone login for multiple services, butdoes not add a second authentication factor.
* B. LDAP (Lightweight Directory Access Protocol)- Used fordirectory authentication,not MFA.
* C. MFA (Multi-Factor Authentication)-#Correct answer.Usesmultiple authentication factorsfor better security.
* D. SAML (Security Assertion Markup Language)- Used forfederated identity management,not multi-factor authentication.