Which of the following two-factor authentication (2FA) methods can you use to secure a GitHub account? (Each answer presents a complete solution…

The following two-factor authentication (2FA) methods can be used to secure a GitHub account:

A . Authenticator app: You can use an authenticator app (like Google Authenticator or Authy) to

generate time-based one-time passwords (TOTP) for logging in.

C . GitHub mobile: The GitHub mobile app can also be used to receive 2FA codes, adding

convenience for users who prefer to manage everything from their mobile devices.

D . Security keys: Physical security keys (such as YubiKeys) can be used as a strong form of 2FA,

requiring physical access to the key to authenticate.

Security questions and Single sign-on (SSO) are not considered 2FA methods in the context of GitHub

account security.