James,a 6-Year-Old,can Correctly Name Objects,catch a Ball and Throw It,and

question 66

Multiple Choice

James,a 6-year-old,can correctly name objects,catch a ball and throw it,and write his ABCs in proper sequence.His younger brother Mark is much less speedy and skillful in all of these areas.What is the BEST explanation for James's superior performance?

• A) James most likely eats healthier foods than Mark.
• B) James's brain has experienced greater myelination than Mark's.
• C) James's frontal cortex is less mature than Mark's.
• D) James has fewer dendrites than Mark.

---

Definitions:

Thermoregulation

The physiological process by which an organism regulates its internal temperature within a certain range, despite external changes.

Integumentary System

The organ system consisting of the skin, hair, nails, sweat, and oil glands, providing protection to the body.

Sebaceous Glands

Small oil-producing glands in the skin that secrete sebum into hair follicles to lubricate the skin and hair.

Ceruminous Glands

Specialized glands in the outer ear canal that produce cerumen (earwax), helping to trap dust and protect the ear from foreign particles.