A Mother Told the Nurse She Was "Appalled" That the Nurse

A mother told the nurse she was "appalled" that the nurse would dare to ask if she took any drugs during her pregnancy. The nurse explains that the information is important in understanding the child's health because embryonic exposure to toxins during pregnancy is the major risk factor for:

A) Mental retardation.
B) Mental illness.
C) Depression in preschoolers.
D) Lactose intolerance.