What changes in fetal behavior signal that fetal brain development is proceeding normally?
A) The axons lengthen and the dentronic arbor grows.
B) The majority of the prefrontal cortex is mature.
C) Glial cells begin to produce neurotransmitters.
D) The embryo gains about half its birth weight.
E) The fetus exhibits alternating periods of activity and rest, and begins to yawn.
Correct Answer:
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