What physically happens to teen brains that make it difficult for someone like Gary to weigh risk and reward?

Answer and Explanation:

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The human brain develops significantly as the human ages, in this case, we can consider that the brain of adults is more developed than the brain of adolescents and children who are still in the process of development. An important consideration about the adolescent brain is that it works by being strongly influenced by the amygdala, which is a structure related to the brain's emotional system. Thus, adolescents' reasoning is greatly influenced by excesses of emotions, which often impair rationality and do not allow for a good analysis and assessment of the risks and rewards that their attitudes can promote.

the answer is d. amendments.