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

question 11

Multiple Choice

Eight-year-old Ella can use scissors to cut small paper dolls out of craft paper, something she could not do at age three. What best accounts for her improving dexterity?

• A) increased cortical thickening in the temporal lobe
• B) increased myelination of the central nervous system
• C) increased bone ossification
• D) increased muscle development

---

Definitions:

Open Market

A market with few restrictions on buy-sell transactions, allowing for free competition and prices dictated by supply and demand.

Surplus Material

Excess materials that are left over after the production process or not used within an operation.

Material B39U

is a specific type of raw material, possibly designated for use in a specialized manufacturing process, but without further context, its exact nature is unclear.

Supervisor's Salary

The amount paid to the individual overseeing and managing a group of employees or a particular department within a company.