Dynamic lists have which key characteristic?

Dynamic lists are designed to automatically update their membership based on specific rules or criteria that you set. This means they actively refresh to include or exclude prospects as their attributes change or as new data comes in. For example, if a prospect meets the criteria for inclusion, they will be added to the list in real-time or at scheduled intervals, and similarly, if they no longer meet the criteria, they will be removed. This allows marketers to maintain an up-to-date understanding of their audience without needing to manually intervene.

The other characteristics described in the options are not true for dynamic lists. They do not perform one-time actions since they are continually updating; they also apply retroactively in the sense that any prospect that meets the criteria at any time will be added or removed from the list, and they are not controlled solely by manual input because their composition changes automatically based on the set rules.