I would choose non-polluting energy source and useful in remote areas - that is if there are plants and industries that are away from the general population.
C. Three equal branches with different powers
I think that maybe people are saying different answers because there might have been many such laws. I will mention one example: the Diversity Visa Immigration: it means that people from Eastern Europe have a higher change of obtaining a visa due to a smaller population in the US than the western European Countries.
About 1,029,900 immigrants settled in the United States in 2009
It heightened public disagreement with the church
