How does the use of alternative energy sources help to control climate change?

Explanation:

"Increasing the supply of renewable energy would allow us to replace carbon-intensive energy sources and significantly reduce US global warming emissions. ... They found that renewable energy could help reduce the electricity sector's emissions by approximately 81 percent [5]." (ucsusa.org)

answer: ‘no one should be discriminated against because he or she is not from a minority group’

because—> affirmative action means ‘a policy or program that provides opportunities for traditionally disadvantaged groups to them overcome the effects of discrimination’

i think it is the third one.