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

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Definitions:

Steering Knuckles

Components in a vehicle's suspension system that connect the wheel to the axle, allowing for steering movements.

Thrust Angle

The angle that the rear wheels make relative to the vehicle's longitudinal axis, important for proper alignment and handling.

Camber

The angle of the wheels in relation to the road surface, seen from the front of the vehicle, which can affect tire wear and vehicle handling.

Caster

The angle of the steering axis in a vehicle, which affects stability, steering effort, and cornering behavior.