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Gandalf Gandalf
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7 years ago
What is the most common recognized biological cause of mental retardation?
A) Down syndrome
B) fragile X syndrome
C) PKU
D) lead poisoning
Textbook 
Psychology: AP Edition

Psychology: AP Edition


Edition: 1st
Authors:
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MehumaijaMehumaija
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7 years ago
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Gandalf Author
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7 years ago
Good timing, thanks!
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Yesterday
Correct Slight Smile TY
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2 hours ago
You make an excellent tutor!
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