The effects of ionizing radiation on the developing brain ______.
A. tend to be consistent throughout gestation
B. are most prevalent during the 8th-15th week of gestation, the typical time of proliferation and migration
C. are most prevalent after the 15th week of gestation, during circuit formation and circuit pruning
D. are most dramatic in the first year of life, when the brain is still in the proliferation stage
Answer: B
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