C is correct.
-The Legislative branch consists of the House of Representatives and the Senate. These two places form Congress, where laws are created. Congress is in charge of passing bills that can be voted on and potentially become law.
-The Executive branch consists of the President, who's job is to enforce laws. Therefore, the Executive branch does not create laws.
-The Judicial branch consists of the Supreme Court. The Supreme Court interprets laws and decides if they follow the rules of the Constitution. Therefore, they do not enforce laws.
-All three branches have distinct roles in the government. No two branches share a major task, nonetheless all three branches.
Hope this helped! :)