Rebecca is very organized. she has set aside specific hours for studying and knows when she has had enough to eat. this behavior can be explained by a mature

Prefrontal cortex

Explanation:

Prefrontal cortex is the region of brain which present in front part. It's function is to perform decision making, addressing complex behavior, impacting social behavior and mind, planning expression of personality etc.Therefore, it manipulates and processes congnitive behavior.

According to the question, Rebecca's organizing personality for ordering her tasks like studying,eating etc is based on mature prefrontal cortex.It helps in regulating tasks and planning the cognitive tasks.

buying socks and buying shoes are independent events.