Answer:
Because it's a story with factors that don't exist in the real world, like Roderick's ability to examine people's minds.
Step-by-step explanation:
A fiction is a text that presents a narrative based on facts and situations that do not exist in the real world. The fiction narrative is the result of the total imagination of its author, provided facts that can often be outlandish and bizarre or based on utopias and scientific questions.
In the text above, we are introduced to a boy who has the incredible ability to use his own mind to analyze other people's brains. We know that it doesn't exist in the real world, so it was created by the author's imagination, so this text is a fiction.