D. It is written to meet the expectations of an established set of customers.
Explanation:
Genre fiction, also known as popular fiction, is a term used for fictional works written with the intent of fitting into a specific literary genre. This is in order to appeal to readers and fans already familiar with that genre ( or the "established set of customers").
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The picture shows an example of the clay plaster like model that is animated in a 3 dimensional way. That is clearly and descriptively stated within the passage.
