Increased productivity. ...
Improved health. ...
Waste minimization. ...
Better use of materials. ...
Environmental Protection. ...
Noise avoidance. ...
Answer:
The answer is a and 1 , b and 2
A-- Initiative.
Referendums have to do with only addressing a single, specific issue.
Federalist systems have to do with having a representative head to the government.
Supremacy clauses have to do with which laws are superior to others in case of conflict. (Federal law is superior, by the way.)