The correct answer is option "C": One way that Congress has clarified the meaning of the Constitution is by passing laws to regulate commerce. The US Constitution establishes that all legislative powers are vested in the US Congress, which consists of a Senate and House of Representatives. Congress has authority over financial, budgetary policy, as well as national defense issues (for example: to declare war, to raise and maintain the armed forces, and to make rules for the military). It also has the power to establish post offices and post roads, issue patents and copyrights. Besides, Courts inferior to the Supreme Court are established by Congress which can make all laws necessary for carrying the Powers vested by the Constitution.
