For Synaptic Pruning to Advance

Multiple Choice

For synaptic pruning to advance,

A) the neural tube must produce fewer neurons during the prenatal period than the brain will need.
B) the prefrontal cortex must attain adult levels of synaptic connections during the prenatal period.
C) appropriate stimulation of the child's brain is vital during periods in which the formation of synapses is at its peak.
D) between 80 and 90 percent of the neurons produced during the first two years must undergo programmed cell death.