<span>Social mobility is the movement of individuals, families, households, or other categories of people within or between social strata in a society. It is a change in social status relative to one's current social location within a given society.</span>
Answer: I think it's D
Explanation: I'm not really sure not good at that stuff
An undeveloped prefrontal cortex is partially responsible for impulsiveness in young children. The prefrontal cortex, which is a part of the brain located at the front of the frontal lobe, is the "executive" of the brain, because it is a crucial part of the brain, involved in planning, prioritizing, and reflection. If not fully developed these functions are not working properly.