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Although the Exact Cause of ADHD Remains Unknown, Evidence from Research

Question 34

Multiple Choice

Although the exact cause of ADHD remains unknown, evidence from research has shown that all of the following are suspected etiological factors, EXCEPT:


A) chemical abnormalities in the brain.
B) food additives.
C) maternal substance abuse, lead poisoning, and low birth rate.
D) hereditary factors.

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