A condition that adds users to an audience when they complete a micro-conversion would be an example of…

An event-based condition adds users to an audience when they perform a specific action, or "event," on a website or app. Completing a micro-conversion, such as signing up for a newsletter or downloading a resource, is a prime example of such an event. This allows for dynamic audience segmentation based on user behavior. Demographic conditions segment users by characteristics like age or location, not actions. While "micro-condition" sounds plausible, it's not a standard term in analytics for this scenario. Metric-based conditions typically involve thresholds of quantitative data (e.g., users who spent over $100), rather than the completion of a single, defined action.