The most accurate response is:
because the prefrontal cortex is not done being rewired yet.
During adolescence, the prefrontal cortex, which is responsible for decision-making, impulse control, and reasoning, is still developing and undergoing significant changes. In contrast, the amygdala, which is involved in processing emotions and regulating responses, is more fully developed during this period. This imbalance results in the amygdala having a greater influence on decision-making in teens compared to adults.