After a head injury, 15-year-old Caroline begins to have temper tantrums, to cry easily, and to behave impulsively. This is most unusual behavior for her. Most likely her was injured

Caroline's behavior has changed after a head injury, so most likely her prefrontal cortex was injured.

Explanation:

Prefrontal cortex is a defined area of the cerebral cortex, just in front of each frontal lobe, related to behavior and actions that enable social interaction.

The structure of complex thought is one of the functions associated with the prefrontal cortex, including awareness of right and wrong, willingness to set and achieve goals, and above all, social control.

The changes Caroline experienced in her behavior -after her head trauma- may have affected her prefrontal cortex.

Learn more:

Prefrontal cortex injury link

hpv is the answer