What type of persona represents users with less focus but might still use the service?

The correct choice is a secondary persona. Secondary personas are used in user experience design to represent users who are less central to the target audience but may still use the service. This means that while these personas might not embody the primary characteristics of the main user group, they still provide insights into how different segments may interact with a product or service.

Creating secondary personas helps teams to identify potential needs, goals, and behaviors of a broader range of users, ensuring that their designs are inclusive and can cater to various user experiences. They serve as a reminder that not all users will have the same level of engagement or focus on the product, yet their experiences and perspectives are still valuable in the design process.

This contrasts with other types of personas, such as negative personas, which represent users who are not a good fit for the service or product, and marquee personas, which highlight key figures or trendsetters without necessarily focusing on less engaged users. Alternating personas, while not a widely recognized standard term in UX, suggests a rotating model of user representation, which does not align with the specific characteristics of less focused users.