The correct answer is limited government by restricting the powers of the federal government.
The quote reflects the principle of Federalism. That is why the quote says that the Congress shall never engage in war or enter any alliance unless the nine states agreed. The decisions should be by the votes of the majority in Congress. That is why it is a Republic with its representatives elected by the people. To take the important decisions that were going to affect the citizens. The balance of powers limits one branch to exercise too much power.