Which of the following two-factor authentication (2FA) methods can you use to secure a GitHub...

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.

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