In a study of mothers who used combinations of alcohol,marijuana,and cocaine during pregnancy,it was found that they produced children who
A)could not be distinguished from those produced by mothers who used alcohol only.
B)had less gray matter than other children for the first few weeks of life, but who were subsequently quite normal.
C)had less white matter than other children.
D)had less gray matter than other children at least until age 10-13 years.

Question

In a study of mothers who used combinations of alcohol,marijuana,and cocaine during pregnancy,it was found that they produced children who​ 
A)could not be distinguished from those produced by mothers who used alcohol only. 
B)had less gray matter than other children for the first few weeks of life, but who were subsequently quite normal. 
C)had less white matter than other children. 
D)had less gray matter than other children at least until age 10-13 years.

Quizplus · Accepted Answer

The statement in the question that the children were "subsequently quite normal" rules out options A and B. Option C is also incorrect as there is no mention of white matter in the question. However, the study found that children of mothers who used combinations of alcohol, marijuana, and cocaine during pregnancy had less gray matter than other children, and this was the case until at least age 10-13 years, making option D the correct answer.

In a Study of Mothers Who Used Combinations of Alcohol,marijuana,and