What was the main concern of anti-federalists?

The main concern of anti-federalists was indeed the potential for an overly powerful government infringing on individual liberties. They feared that a strong central government, such as the one proposed in the U.S. Constitution, might become tyrannical and threaten the rights and freedoms of individuals and states. Anti-federalists advocated for a bill of rights to safeguard those liberties, emphasizing the importance of limiting government power to protect personal freedoms. Their apprehension stemmed from historical experiences under British rule, leading them to prioritize the preservation of individual rights and state sovereignty over a powerful federal structure.

The other options do not accurately capture the core concerns of the anti-federalists. While they acknowledged various issues, their predominant worry was centered on the potential for government tyranny, not necessarily the need for a stronger government, the establishment of a national bank, or the representation structure in Congress.