The development of the prefrontal cortex during early childhood enables children to:

• A. Sleep more deeply
• B. Control their behavior
• C. Refuse to eat
• D. Run faster

Answer: (B)

During early childhood, the prefrontal cortex is developing the circuits that support executive functions like inhibitory control, working memory, and flexible thinking. As these functions mature, children become better at regulating impulses, following rules, and planning their actions, which translates into better control over their behavior. That’s why this development best explains why children gain the ability to manage how they act in different situations.

Sleep depth, eating choices, and running speed involve other brain systems. Deep sleep is governed more by brainstem and autonomic regulation; refusing to eat can relate to sensory preferences or autonomy rather than direct prefrontal control; running speed relies on motor areas, coordination, and physical strength.