Which innovative market research technique revolutionized the publishing industry by providing unprecedented insights into reader engagement patterns?

In the publishing world, understanding reader preferences has evolved dramatically with technology. Major publishers and bookstores now employ sophisticated market research techniques to predict bestsellers and analyze reading habits. This poll tests your knowledge of how market research has transformed the book industry and influenced literary trends in recent years.

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Digital reading analytics that track time spent on pages and completion rates
Traditional focus groups with demographically diverse readers
Social media sentiment analysis of book reviews
Annual reader preference surveys conducted by major bookstore chains