Darci is reviewing an overlap for her brand and notes that one of the overlapping audiences has a size of 4. What does this indicate?

An overlap score of 4 indicates that the overlapping audience is 4 times more likely to be part of the audience selected for the report compared to the average Amazon audience. This metric helps advertisers understand the relevance and concentration of specific audience segments within their target group. It doesn't directly measure interaction likelihood or overall audience size. The option stating 40% similarity is incorrect because the overlap score is a multiplier, not a percentage of similarity.