Which metric do major film studios consider the most reliable predictor of opening weekend box office success during a movie's product launch campaign?

The film industry spends millions on marketing campaigns for major releases. From teaser trailers to merchandise partnerships, studios track various metrics to gauge audience interest and predict box office performance. This trivia tests your knowledge of how Hollywood analyzes product launches and measures pre-release engagement. Can you identify which data point film studios consider most predictive of opening weekend success?

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Social media sentiment analysis scores in the final 72 hours before release
Number of trailer views across all platforms
Celebrity interview engagement rates on talk shows
Pre-sale ticket volume compared to similar genre releases