D is the correct answer
As explanation: A Supreme Court justice is appointed for life. This means that their rulings are not bound to traditional elected politics in the way that elected judges are responsible to voters. Judges agree to the doctrine of stare decisis, which refers to letting the decision stand or following precedent. This enables a smooth continuity when it comes to American law and ensures that modern law is based on small clarifications instead of wild and unpredictable shifts.