How does smoking influence fetal development?
A. Nicotine reduces the supply of oxygen and nutrients available to the fetus, affecting growth and development.
B. Nicotine interferes with the passage of wastes from the fetus to the mother causing toxins in the fetus' bloodstream.
C. Nicotine interferes with the hormones related to signaling the mother's body that the baby is ready to be delivered; therefore, babies born to mothers who smoke tend to be delivered past the due date.
D. Nicotine causes the amniotic sac to rupture prematurely, causing the mother to go into labor too early.
Answer: A
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