Which of the following best describes the purpose of two-factor authentication?

Two-factor authentication (2FA) enhances security significantly by requiring users to provide two different forms of identification before gaining access to an account or system. This process typically involves something the user knows (like a password) and something the user has (such as a mobile device or a hardware token that generates a one-time code). By implementing this additional verification step, it becomes much more difficult for unauthorized users to gain access, even if they have acquired the user’s password.

The primary goal of two-factor authentication is to provide a higher level of security compared to single-factor authentication, which relies solely on passwords. This approach mitigates risks associated with common threats like phishing, where attackers may obtain passwords without the second factor needed for access. As such, the correct option highlights the essential function of 2FA in strengthening account protection.