The dep. of Treasury (most likely), it has existed since Washington's presidency.
checks and balances or maybe veto? I don't truly understand your question, sorry.
The correct answer is C. The Constitution allows the supension of the right to habeas corpus in the case of public safety being threated. Abraham Lincoln decided to suspend it because in Maryland, important strategic route to Washington, there was a great number of organized and violent people who opposed the Union. He couldn'd trust totally in the Maryland legislature either.
To interpret laws is what the Judicial Branch does as its main purpose.
It was primarily "d. wealthy merchant families such as the Medici and popes such as Julius II" who paid the great artists and architects of the Renaissance to create their masterpieces, since they had money to spare.