The correct answer is A) Congress can appoint judges to the federal and Supreme Court.
The legislative branch uses the checks and balances system to monitor the judicial branch in that Congress can appoint judges to the federal and Supreme Court.
The system of checks and balances has helped the United States government to maintain a balance of powers so neither branch can dominate the other or abuse in the application of its powers. The President of the United States -the executive branch- has the power of vetoing laws that Congress wishes to pass. That is its check on the legislative. But the legislative can override the President's veto by a two-thirds vote in the House of Representatives and the Senate. Meanwhile, the Judicial branch checks both branches by declaring laws unconstitutional.
