The correct answer is D) Legislative.
The House of Representatives and the Senate make up the Legislative branch of the U.S. Government.
In the United States political system, Congress or the legislative branch is part of the blueprint for the checks and balances system in the federal government.
The other two are the Executive branch that is the President of the United States and the Judicial branch that is the US Supreme Court.
The Legislative branch has the power to impeach and remove public officials, including the President of the United States, as has been the case with Andrew Johnson, Bill Clinton, and Donald Trump.