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

question 77

Multiple Choice

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

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