Answer:
D. The president nominates federal judges, while the Senate approves the nominations.
Step-by-step explanation:
The appointment of federal judges is one example of how different powers of government work together in order to benefit the country. When a judge needs to be appointed to the Supreme Court, it is the President who makes the nomination. However, this needs to be approved by the Senate before it becomes possible. If the Senate approves the nomination, then the candidate can become a judge.