The stage of prenatal development during which the fetus is most susceptible to teratogens is the __________ stage.
A) ovulatory
B) zygote
C) embryonic
D) fetal
E) pregnancy

Question

Quizplus · Accepted Answer

The embryonic stage, which occurs from the 3rd to the 8th week after fertilization, is when the developing organism is most susceptible to damage from external factors, including teratogens, because this is the critical period for the formation of the major organ systems.

The Stage of Prenatal Development During Which the Fetus Is