Twelve-year-old Heather has a smaller head circumference and less gray matter thickness than typical children of her same age,sex,and size.It is most likely that
A)Heather's mother used alcohol and other drugs during her pregnancy.
B)Heather's mother has PKU.
C)Heather has PKU.
D)Heather has fragile X syndrome.

Question

Twelve-year-old Heather has a smaller head circumference and less gray matter thickness than typical children of her same age,sex,and size.It is most likely that​ 
A)Heather's mother used alcohol and other drugs during her pregnancy. 
B)Heather's mother has PKU. 
C)Heather has PKU. 
D)Heather has fragile X syndrome.

Quizplus · Accepted Answer

Prenatal exposure to alcohol and other drugs can lead to developmental issues such as smaller head circumference and reduced gray matter thickness, which are indicative of fetal alcohol spectrum disorders.

Twelve-Year-Old Heather Has a Smaller Head Circumference and Less Gray