Quincy is four years old,and he has mental retardation and a slightly misshapen face.What most likely happened during Quincy's prenatal development?
A) He was exposed to a teratogen.
B) His mother experienced severe stress.
C) His mother did not take in enough vitamin B.
D) He skipped the embryonic period.

Question

Quizplus · Accepted Answer

Quincy's mental retardation and misshapen face suggest that he was exposed to a teratogen during prenatal development. Teratogens are substances, such as drugs or viruses, that can cause birth defects or other developmental abnormalities.

Quincy Is Four Years Old,and He Has Mental Retardation and a Slightly