Carl's son has been diagnosed with a learning disability. Since then, Carl has spent a significant amount of time understanding the causes of his disability. He learns that even though several research studies have been conducted, the precise causes have not yet been determined. He comes across a research finding that indicates that it is unlikely that learning disabilities A) reside in a single, specific brain location.
B) are due to problems in integrating information from multiple brain regions.
C) are a result of subtle impairments in brain structures.
D) occur as a result of subtle impairments in brain functions.