The world’s most powerful nations agree that palestinians and israelis both have the right to  exist safely without questionbe voting un membershave a homeland of their ownend negotiations.

They made a checks and balance system to equal power within the branches. the "check" meant that one branch would watch one branch and "balance" them if they were too powerful. if you want more info on this, i would just google checks and balance system.

It is c because it shows how the author is stating their own oppinion about the protagonist