Which of the following events is an example of a revolution?

B. A group of people, say the Bolsheviks of Soviet Russia, overthrow the government. Although there was not a democratic government set up afterward, it is still a revolution.

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.