The correct answer is A.
OBJ-1.3: Multifactor authentication is an authentication scheme that relies on at least two of the five factors: something you know, something you have, something you are, something you do, and somewhere you are. Since the user must enter their username and password, this is something they know. Since the user must enter a one-time code texted to their smartphone, this is something they have. Using this combination is considered two-factor (2FA) or multifactor authentication (MFA). Single Sign-on (SSO) is an authentication technology that allows users to authenticate once and receive authorizations for multiple services. The advantage of single sign-on is that each user does not have to manage multiple user accounts and passwords. The disadvantage is that compromising the account also compromises multiple services. Face ID is an Apple device feature that uses a face lock to grant access to the device. Face ID is considered a form of biometric authentication. Touch ID is an Apple device feature that uses fingerprint biometric information to grant access to the device.