Which set of action satisfy the requirement for multifactor authentication?

This is an example of how two-factor authentication (2FA) works:

1. The user logs in to the website or service with their username and password.

2. The password is validated by an authentication server and, if correct, the user becomes eligible for the second factor.

3. The authentication server sends a unique code to the user’s second-factor method (such as a smartphone app).

4. The user confirms their identity by providing the additional authentication for their second-factor method.