Which product development approach was primarily used to create the narrative structure of the groundbreaking interactive novel 'S.' by J.J. Abrams and Doug Dorst?

The publishing industry has undergone significant transformations in how books are conceptualized, developed, and marketed. Modern product development techniques have changed how publishers and authors create literary works that resonate with readers. This poll tests your knowledge of innovative product development methodologies that have shaped bestselling books and literary phenomena in the digital age.

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Design Thinking methodology with multiple prototype iterations shared with focus groups of readers
Agile storytelling with parallel narrative tracks developed by separate creative teams
Six Sigma optimization of plot elements based on statistical analysis of previous bestsellers
Waterfall development with complete manuscript approval before adding any multimedia elements