The correct answer is C) concern for individual liberty.
The important anti-federalist idea is expressed in this excerpt from the anti-federalist papers is "concern for individual liberty."
The antifederalists, led by Thomas Jefferson, wrote the Anti Federalists Papers to share their concerns with people of the United States about the risk of having a strong central government, as the Federalists such as Alexander Hamilton, John Jay, and James Madison, supported. The Anti Federalist papers were a series of essays written from September 1787 to January 1790.