B, because college is so expensive no common man can afford it without assistance.
There are many reasons why a nation supports education and training including the fact that, much of the human capital of a nation's workforce is acquired in school. Without proper education the workforce would not be as productive or capable of producing high levels of economic output.
Massachusetts had to hire its own army to put down Shays' Rebellion. The solution was to find a middle way, a blueprint of government in which the powers were shared and balanced between the states and national interests. That compromise, woven into the Constitution and the Bill of Rights, became known as federalism.
