It Is Difficult to Isolate the Precise Damage Caused by Illegal

Multiple Choice

It is difficult to isolate the precise damage caused by illegal drug use during pregnancy because

A) most drug-using mothers refuse to participate in teratology research.
B) the majority of babies born to drug-using mothers do not survive for more than a few days.
C) most drug-using mothers quit during the first trimester of pregnancy.
D) users often take several drugs, display other high-risk behaviors, and suffer from poverty and other stresses.