What is an option for unsubscribing if a preference page is used?

The correct answer is that the option for unsubscribing if a preference page is used is a one-click unsubscribe. A preference page typically allows users to manage their communication preferences with ease. When a one-click unsubscribe option is presented, it simplifies the process for the user, enabling them to quickly and efficiently remove themselves from a mailing list with minimal steps involved. This enhances user experience and aligns with best practices for email marketing, where user empowerment and ease of task completion are prioritized.

In contrast, options like two-click unsubscribe or three-step verification generally add unnecessary complexity to the process. Manual subscription cancelation can also be less efficient and user-friendly, as it often requires more interactions or steps to achieve the same outcome. Therefore, a one-click unsubscribe option leverages the advantages of modern account engagement practices, making it the most effective and user-friendly choice for unsubscribing.