The statement which best describes a representative democracy is:
C. Citizens elect officials who express voters' interests in the government.
Representative democracy is also known as indirect democracy precisely because the people are represented by those they elect. Instead of going to Congress ourselves to vote on different matters, we elect officials who we believe will defend our interests to do that for us. That is the case in the majority of Western democracies.
Bush Exceeded them so that he can over-use the force to fight some Terrorists in the Middle East & Beyond that. He Expanded Military spending & spent too much on the War of Terror (2 Trillion USD). Now with Obama, He also had his War Powers Authority, but he mostly used it for Drone strikes all over, he didn't slow it or rise it, he just kept the Authority powers in a straight line.