Answer:
Major role.
Explanation:
Family and friends play a great role in Luis's decision to join a gang because his family did not focus on his actions and activities. If his family and friends focus on his character and his education he will not join the gang. If he get respect from his family and society he will be a different man but discrimination and no respect from the society force him to join the gang.
It's most likely "proteins"
The answer to this question would be achieving one's full potential. I hope this helped! :)
I know it may cause (a) but it gives a higher risk for cancer.