Eight-year-old Ella can use scissors to cut small paper dolls out of construction paper, something she could not do at age three. What BEST accounts for her improving dexterity?
A) Cortical thickening in the temporal lobe
B) Increased myelination of the central nervous system
C) Increased bone ossification
D) Increased muscle development

Question

Quizplus · Accepted Answer

Increased myelination of the central nervous system improves the speed and efficiency of neural communication, which enhances fine motor skills like using scissors.

Eight-Year-Old Ella Can Use Scissors to Cut Small Paper Dolls