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Home Q & A Board Science-Related Homework Help Psychology
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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
Thanks for your help!!
tcat
wrote...

Yesterday
Good timing, thanks!
mmmm_dat_userna
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2 hours ago
Brilliant ツ
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