Answer;
C. tetratogen
A tetratogen is any environmental agent—biological, chemical, or physical—that causes damage
Step-by-step explanation;
A tetratogen is any environmental agent—biological, chemical, or physical—that causes damage to the developing embryo or fetus.
Teratogens may cause a birth defect in the child or may halt the pregnancy outright.
The classes of teratogens include radiation, maternal infections, chemicals, and drugs.