Final answer:
Two-factor authentication requirements for password resets are typically set in the Group Policy of an IT system, not in individual user's account settings or an Authentication Center. This approach is a common practice to enhance security across the system.
Step-by-step explanation:
To ensure that a user provides two-factor authentication for a password reset in an IT system, this requirement is typically set within the Group Policy of the system. Group Policy is a feature of Windows that provides centralized management and configuration of operating systems, applications, and users' settings. In an enterprise environment, IT administrators use Group Policies to enforce security settings, including requirements for two-factor authentication during certain processes like password resets. This security measure is indeed common practice to enhance the security of user accounts.
The option to require two-factor authentication would not typically be found in the individual user's account settings, as this is a system-wide policy that needs to be enforced consistently across all user accounts. Additionally, while there may be a component of the system called the Authentication Center or similar, it is the Group Policy where such requirements are configured, not the center itself.
Therefore, the correct answer for setting a requirement for two-factor authentication for password reset in an IT system is (b) Group Policy.