Answer:
teratogen
Step-by-step explanation:
A teratogen is any agent or factor that can cause malformations or functional abnormalities in a developing fetus, leading to congenital anomalies or birth defects. Alcohol is a teratogenic substance, and consuming it during pregnancy can result in fetal alcohol syndrome (FAS), which can cause physical, mental, and behavioral problems in the child. Hence, Kristi is aware that drinking alcohol during her pregnancy can produce birth defects in her baby and should avoid it.