The correct answer is the powers the constitution delegated to it.
During the development of the Constitution, the Anti-federalists were concerned about the size and power of the federal government. Many of these individuals were fearful that a strong federal government would become corrupt, just like Britiain's was before the colonists declared their independence. In order to prevent a tyrannical central government, the Anti-federalists proposed having the federal government only having the powers specifically given to them in the US Constitution.
The First Amendment is one of the most important amendments for the protection of democracy. Freedom of religion allows people to believe and practice whatever religion they want. Freedom of speech and press allows people to voice their opinions publicly and to publish them without the government stopping them.