Which amendment protects the freedom of speech?

The First Amendment is significant because it explicitly protects several fundamental rights, including the freedom of speech. This amendment is a cornerstone of American democracy as it ensures individuals can express their opinions, beliefs, and ideas without fear of government censorship or punishment. The First Amendment's broad interpretation encompasses not just spoken and written words, but also actions, symbols, and expressive conduct, thereby fostering a rich environment of open discourse and debate.

In the context of the other amendments mentioned, the Second Amendment deals with the right to bear arms, the Fourth Amendment focuses on protection against unreasonable searches and seizures, and the Fifth Amendment addresses rights related to legal proceedings, such as protection against self-incrimination and double jeopardy. None of these amendments pertain to the specific protection of speech, which is why the First Amendment is the definitive answer to this question.