A teratogen is any agent or condition that increases the risk for:

A) prenatal abnormalities.
B) damage to the placenta.
C) extra chromosomes.
D) male infertility.

Teratogen

An agent or condition, including viruses, drugs, and chemicals, that can impair prenatal development and result in birth defects or even death.

Prenatal Abnormalities

Defects or conditions that occur in a fetus during pregnancy, which can be structural, functional, or genetic.