Which of the following is NOT one of the three branches of government?

The correct answer is the Administrative Branch because it is not one of the three main branches of government as defined in the United States Constitution. The three core branches are the Executive, Legislative, and Judicial branches.

The Executive Branch is responsible for enforcing laws and is headed by the president at the federal level. The Legislative Branch is tasked with creating laws and is comprised of Congress, which includes the Senate and the House of Representatives. The Judicial Branch interprets laws and administers justice through the court system.

On the other hand, the term "Administrative Branch" typically refers to various agencies or administrative bodies that operate within the Executive Branch to help implement policies and regulations, but it is not recognized as a separate branch of government itself. This distinction highlights why "Administrative Branch" is the correct answer to this question.