Which of the following is a branch of the U.S. government?

The Legislative branch is one of the three primary branches of the U.S. government, established by the Constitution. Its main responsibility is to create laws and consists of two houses: the Senate and the House of Representatives. This separation of powers is a fundamental principle of U.S. governance, designed to prevent any one branch from becoming too powerful by providing checks and balances among the Legislative, Executive, and Judicial branches.

The other choices do not reflect established branches of the U.S. government. The Monetary option is more related to economic management rather than a distinct government branch. The Administrative category typically refers to functions related to the Executive branch but is not a separate branch itself. Lastly, while Judicial and Executive represent two of the three branches, it is important to note that they are not a single cohesive branch and therefore do not fit the criteria of the question.