The major difference between an embryo and a fetus is that
A. organ systems are developing in an embryo while all organs are present in a fetus.
B. a fetus is a male child while an embryo is a female child.
C. a fetus can survive outside the mother's womb but an embryo cannot.
D. a fetus is smaller than an embryo.
E. None of the choices are correct.
Answer: A
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