The logical fallacy that is being used in the passage is B) overgeneralization.
Although there are some narratives written after 1920 that are characterized by their complexity such as William Faulkner's works,<u> not all literature written after that time is difficult to understand</u>. Furthermore, complexity is not a synonym of a lack of elegance or refinement.
There are flaws in reasoning in this passage due to hasty generalization. Overgeneralization occurs when someone unable to consider the whole panorama generalises from inadequate or insufficient evidence and reaches a rushed conclusion about a certain subject. It is overgeneralization what has lead this passage to become an illogical statement.
Nature-deficit disorder is the idea that human beings, especially children, are spending less time outdoors, and the belief that this change results in a wide range of behavioral problems. This disorder is not recognized in any of the medical manuals for mental disorders.
