Which of these settings allows Google Analytics to save event data for future analysis without erasing it?

The data retention period setting in Google Analytics 4 is designed to determine how long event data is preserved before it is deleted or anonymized. When this setting is configured appropriately, it ensures that Google Analytics retains user-level data, such as events, for a specified period, allowing for thorough future analysis of user behavior over time.

This retention policy allows businesses and analysts to gain insights from historical data without the risk of it being erased prematurely. For instance, if the data retention period is set to 14 months, all event data will be available for analysis for that duration, which can provide valuable context and insights into user trends, behaviors, and engagement patterns.

In contrast, the other options pertain to different aspects of data handling in Google Analytics. The user data retention policy and user interaction tracking focus on how data is managed and collected, not specifically on the preservation of event data for analysis. Event prioritization settings relate to how events are ranked for measurement and reporting, rather than their storage length. Thus, the data retention period is the correct choice for ensuring that event data is retained for future analysis.