Who is 18-years-old, continued drinking alcohol and smoking cigarettes during her pregnancy. when she gave birth at 34 weeks, her daughter weighed 4 pounds. now 9-months-old, her daughter is not sitting up by herself and is showing signs of other motor control difficulties. she may have

Fetal Alchohol Syndrome. 

We can come to this conclusion based on the fact that the mother drank alcohol during the pregnancy, and upon birth the child was significantly underweight. Coupled with the suppressed development of the child both in physical and mental symptoms, it is clear that the child suffers from fetal alcohol syndrome.