A. The Constitution must guarantee the protection of individual rights.
Explanation:
The Anti-Federalists strongly opposed giving too much power to the central government, fearing that giving too much power to the government would turn American into a monarchy and bring about many abuses of powers and civilian injustices, especially to the middle and working class. Instead, they promoted that the Constitution must grant more power to the states and the people, thus it needed to guarantee the protection of individual rights, such as freedom of expression, a right to have a fair trial, right to have reserved powers, among others.