I still don't understand 23. Can someone pleas explain? Thanks
......Therefore, this discovery provides definitive evidence that schizophrenia is caused by damage to the physical structure of the brain.
(B*) The relative smallness of certain parts of the brains of schizophrenics is
the result of schizophrenia or of medications used in its treatment.
Therefore, damage of the brain is an effect
of schizophrenia or medications and is not a cause
It destroys the conclusion.
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