The historical reference to a 'wall of separation' between religion and the state can be found in

• A. The Bill of Rights.
• B. The writings of Thomas Jefferson.
• C. The Federalist papers.
• D. Twentieth-century Supreme Court decisions.

Answer: (B)

The idea being tested is the origin of the phrase that describes a separation between church and state. This metaphor comes from Thomas Jefferson’s writings, especially a 1802 letter to the Danbury Baptists in which he argued that government should not interfere with religion and that there should be a wall of separation between church and state. This framing captures how the First Amendment’s Establishment and Free Exercise Clauses are intended to function: the government remains neutral toward religion and does not establish or favor one faith over others. So Jefferson’s writings are the best source for this historical reference.

The Bill of Rights contains the protections of the First Amendment, but the exact phrase isn’t in the text itself. The Federalist Papers discuss the structure of the new government and debates over federal power rather than articulating a church–state separation as a central metaphor. Twentieth-century Supreme Court decisions interpret and apply the Establishment Clause, but they come after Jefferson and reflect later judicial interpretation rather than the origin of the phrase.