What Happens After the Prefrontal Cortex Undergoes a Phase of Brain

What happens after the prefrontal cortex undergoes a phase of brain cell elimination and rewiring based on the use-it-or-lose-it principle?

A) There is much more efficient and more focused information processing.
B) The prefrontal cortex becomes a reliable internal brake on runaway emotions and impulsive actions.
C) The prefrontal cortex acts as a catalyst for risky and impulsive behavior.
D) Both a and b