Improvement of Fine Motor Skills During Middle and Late Childhood

Multiple Choice

Improvement of fine motor skills during middle and late childhood is likely a result of:

A) increased myelination of the central nervous system.
B) the proliferation of neuron circuits in the brain.
C) an increase in the neurotransmitter dopamine.
D) a simultaneous process in which axons in the brain die off,while dendrites in the brain grow and branch out.