Final answer:
Fetal alcohol syndrome (FAS) is the most severe form of fetal alcohol spectrum disorders (FASDs), caused by alcohol exposure during pregnancy. It results in physical and cognitive impairments. FASDs are preventable by abstaining from alcohol during pregnancy.
Step-by-step explanation:
Fetal alcohol syndrome (FAS) is the most severe form of fetal alcohol spectrum disorders (FASDs). It is caused by alcohol exposure during pregnancy and can result in a range of physical and cognitive impairments in the child. Signs and symptoms of FAS may include abnormal craniofacial appearance, short height, low body weight, cognitive deficits, and behavioral problems. FASDs are completely preventable by abstaining from alcohol during pregnancy and while trying to conceive.