The difference is that when serving they: hold hearings, and develop as well as vote on legislation, all bills must also go through the congress before being passed, while representing they attend to the needs of the constituents of the federal government so they give special attention to request from people of higher interest
The correct answer is: "a supply curve"
The supply curve is a function that represents different combinations of prices and quantities. Those quantities, are the amounts that producers of a certain good or service are willing to manufacture and/or sell at each price level.
It is an upward-sloping function as, according to the law of supply, the higher the market price, the larger the number of units that producers are willing to supply in the market.
Many places are named using Native American words, so the answer is A.