Final answer:
Despite Voom shoes' visibility in a film, sales did not increase as audiences were likely too engrossed in the story to notice them as a product. Young viewers often see brand appearances in films as a part of the narrative, not a sales pitch.
Step-by-step explanation:
Based on the information provided in the question, the most plausible hypothesis explaining why the sale of Voom shoes did not increase despite their visibility in the film is option D: Audiences were too engrossed in the story to notice the shoes. As stated, younger viewers consider brand appearances an acceptable part of the film and connect it with feelings of belonging, comfort, and security. This implies they might not necessarily view these products with a consumerist perspective but rather as integral aspects of the narrative.
Learn more about impact of brand appearances in films