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A
The Preamble
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B
The Bill of Rights
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C
The Articles
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D
The Federalist Papers
Why this is the answer
The first ten amendments to the Constitution are called the Bill of Rights. This is a 65/20 civics question. Ratified in 1791, the Bill of Rights guarantees fundamental protections such as freedom of speech, religion, and the press; the right to bear arms; protection against unreasonable searches; and rights for those accused of crimes. The Preamble is the Constitution's introduction, and the Federalist Papers were essays arguing for ratification — neither is the Bill of Rights. Knowing that the first ten amendments are the Bill of Rights is a core principles-of-democracy item on both versions of the test.
Source: USCIS Civics Question 5 (65/20) — Bill of Rights