Three of the Following Statements Are Consistent with Research Findings

Multiple Choice

Three of the following statements are consistent with research findings about factors that influence brain development. Which statement has not been supported by research?

A) Genetic factors predispose some people to learning difficulties or mental illness.
B) High levels of alcohol consumption during pregnancy can lead to mental retardation.
C) High levels of toxic substances (e.g., lead, pesticides) have their greatest negative impact after puberty.
D) Opportunities to learn certain skills may lead to detectable differences in brain structures or patterns of brain activation.