The correct answers would be B. Social and D. Community
Gang presence and income inequality can be found in certain types of communities, your local neighborhood for example and that can have a big impact on underage drinking due to local pressure and learning bad behaviors from your environment. In addition gang presence and income inequality might also be found within your social circle including your friends and family which can lead to peer pressure and engaging in certain types of behaviors.
Answer:
A. the court system
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If there is a new disease or virus of some sort, they would need to keep aware of how to fix them. For example if there was an amazing cure for cancer doctors would have to know and treat their patients.
Unwanted pregancy or just not ready to take responsibility of a child