From ages 3-6 brain growth is most rapid in the?

From ages 3-6, brain growth is most rapid in the prefrontal cortex, which is involved in higher cognitive functions such as decision-making, impulse control, and social behavior. During this period, children also develop critical language skills and emotional regulation, laying the foundation for later learning and social interactions. This phase is crucial for cognitive and emotional development, as the brain forms connections and pathways that will affect lifelong abilities.