Who is currently serving as a Supreme Court Justice?

The correct answer identifies a sitting Supreme Court Justice as currently serving in that position. A Supreme Court Justice is a member of the highest court in the United States and is appointed by the President, with the advice and consent of the Senate. The role of a Supreme Court Justice is to interpret the Constitution and federal law, making decisions that can have significant impacts on American law and society.

In the context of the other options, a former President refers to individuals who have completed their term in office and no longer hold that position, thus not serving as a Justice. Similarly, an elected senator holds a legislative office and is involved in creating laws rather than interpreting them, which is the role of a Justice. Lastly, a state judge operates within state legal systems rather than the federal system, which includes the Supreme Court; thus, they are not part of the Supreme Court. Each of these roles, while significant in their respective contexts, does not align with the ongoing responsibilities of a Supreme Court Justice.