Question: 4. Body organs first begin to form and function during the period of the ; within 6 months, during the period of the , the
4. Body organs first begin to form and function during the period of the
; within 6 months, during the period of the , the organs are sufficiently functional to provide a good chance of surviving and thriving.
a. zygote; embryo
b. zygote; fetus
c. embryo; fetus
d. placenta; fetus
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