Please answer this question correctly and asap. It's a Computer Security and Forensics class

Two-factor authentication is getting more and more necessary and leading to even more than two, called multi-factor authentication. To implement a two-factor authentication in your organization as a security engineer O you will need to have a phone number where you can call the employee O you will need an email address other than the company's email address to confirm their identity O you will require the employees to answer a secret question, such as what's your mother's maiden name?" O you will require each employee to present for verification any second secret- something you know, something you are or something you have