The answer is A, the company that writes these school workbooks makes the question sound way more confusing than it has to be.
Fear of overthrow--European leaders were fearful they would be next in a liberal overthrow and banded together to protect the interests of their monarchies.
Klemens von Metternich of Austria convened the Congress of Vienna where he created a plan to protect the monarchies of Europe. Through alliances they all agreed to protect and defend each other if a revolution occurred in their country.
The answer is either A. or C, but I believe that the answer would be A.
This is a system set up by the founding fathers, people would want to stick with the passed down, original tradition.
It also gives low-population states a say in federal government where higher population states might overwhelm them, if its possible to that is. Plus, in my opinion at least, popular vote is pretty much useless
The answer is President;Senate
Since the cabinet will be a direct support for the presidents in realizing his/her plan, the president has the right to personally pick the members based on the expertise that the president see fit. In the selection process, the Senate only has the right to give suggestions and to confirm it