How many justices serve on the Supreme Court?

The Supreme Court of the United States has nine justices. This includes one Chief Justice and eight Associate Justices. The number of justices has been set at nine since 1869, although the Constitution does not specify the number of justices; it allows Congress to determine the structure of the Supreme Court. The role of the justices is to interpret the law, adjudicate cases that involve federal law, and ensure that the Constitution is upheld. The Supreme Court holds significant influence over the law and its interpretation in the United States, making the understanding of its structure, including the number of justices, an essential aspect of civics education.

Other answers reflect incorrect numbers of justices that have either never served on the Supreme Court or were not part of its established structure. Knowing that nine is the definitive number helps clarify the judicial framework of the country.