It's Known That Teenagers and Young Adults Are Impulsive in Nature

It's known that teenagers and young adults are impulsive in nature, take unnecessary risks, and are, therefore, more susceptible to drug addiction. Scientists hypothesize that the reason for this could be the fact that the ________ lobe doesn't fully develop until the early twenties.

A) temporal
B) occipital
C) parietal
D) frontal