Which of the following is NOT a Cabinet-level position?

The Chief Justice is not a Cabinet-level position because the Cabinet is comprised of the heads of the executive departments, who are appointed by the President and confirmed by the Senate. The Chief Justice, on the other hand, is the head of the judicial branch of the government and oversees the Supreme Court. While the Chief Justice plays a critical role in interpreting laws and ensuring justice, this position does not fall within the Cabinet, which focuses primarily on the administration of government operations concerning federal departments such as defense, state, and agriculture. Each of those secretaries, in contrast, leads a specific department that carries out Executive Branch functions and provides advice to the President on related matters.