What is the role of MFA in the Zero Trust User Pillar?

What is the role of MFA in the Zero Trust User Pillar?
A . It removes the requirement of a password-based authentication.
B . It is used to authorize multiple users at the same time.
C . It is used to simplify user access without compromising security.
D . It adds an extra layer of security by requiring multiple forms of verification.

Answer: D