The answer is the one that starts with: to exchange ideas and services.
I think the answer is c because stability influenced high school enrolment rates but for Kobe it requires a higher education rate and a highest number of students to stay in school
There is no clear answer to this but I believe, as a former Social Studies teacher and third-year law student, that the best answer to this is judicial review.
Judicial Review exists based on the general principle that the Government has to follow the rules of the game, namely the Constitution, and that it is the Judicial branches duty to review the actions of the Executive and Legislative branches to see if they are following the rule of law.