Exposure to Toxins Is Particularly Dangerous to the Embryo in the First

Multiple Choice

Exposure to toxins is particularly dangerous to the embryo in the first trimester of pregnancy because

A) induction of organ systems is occurring during this period.
B) rapid cell division is taking place during this period.
C) tissue differentiation is occurring at its highest levels during this period.
D) organs are beginning to form during this period.
E) All of the above