To limit the amount of power. Parties are composed of people, usually people who consider their party to be the best. However with too much power in one party causes anarchy and chaos therefore allowing more segues for corruption and abuse of systems. Therefore when the system of power is abused or overused it takes funds that some governments don't have to fix the issues created.
John Nance Garner was the president in 1935
each of the three branches of government can limit the powers of the others. This way, no one branch becomes too powerful.
Answer would be A or D, the answer choices are dumb