Which of the following statements best describes the function of the placenta?
A) The placenta connects the mother's and the baby's blood supplies.
B) The placenta is a two-way exchange of nutrients and waste materials between the mother and the fetus.
C) The placenta is a barrier that protects the developing baby from all harmful substances.
D) The placenta's only function is to carry nutrients and oxygen to the developing baby.
Correct Answer:
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