What must a child be able to conceptualize before deferred imitation is possible?

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.

What is the term for the reflex that scientists feel represents a leftover response that humans inherited from their nonhuman ancestors?

a) Babinski b) Rooting c) Swimming d) Moro