According to recent publishing industry data, which design element has shown the strongest correlation with increased e-book sales for literary fiction in the past five years?

Book cover design has undergone radical transformation with the rise of digital retail and e-books. Publishers now use advanced data analytics and customer demographic insights to create covers that appeal to specific reader segments. This poll tests your knowledge about how product design in publishing has evolved in response to retail digital transformation and changing consumer preferences.

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Minimalist typography with limited color palette
Detailed illustrations featuring realistic character depictions
Abstract geometric patterns with bright contrasting colors
Vintage photography with sepia or monochrome filters