Answer:
States are protected from being sued by the federal government.
Step-by-step explanation:
The text of the Eleventh Amendment to the Constitution of the United States states that
The Judicial power of the United States shall not be construed to extend to any suit in law or equity, commenced or prosecuted against one of the United States by Citizens of another State, or by Citizens or Subjects of any Foreign State.
This means that states have the power and rights to be protected from certain lawsuits brought against them by the federal government. This means that federal governments cannot sue states without the latter's consent, thereby providing immunity to states from being sued.
Thus, the correct answer is the fourth or last option.