Which amendment guarantees freedom of speech?

The First Amendment of the United States Constitution is the cornerstone of American democracy, ensuring key freedoms that are essential to a functioning society. This amendment explicitly guarantees the right to freedom of speech, which allows individuals to express their thoughts, opinions, and beliefs without fear of government censorship or punishment. This freedom is fundamental to fostering open discourse, debate, and a diversity of viewpoints within a democratic society.

The First Amendment not only protects speech but also encompasses the freedom of the press, the right to assemble peacefully, and the right to petition the government. This broad protection is crucial for citizens to challenge the government and hold it accountable.

Other amendments, such as the Second, Fifth, and Tenth, address different rights and issues and do not pertain directly to the protection of free speech. Therefore, the First Amendment is clearly the correct answer as it establishes and protects this essential right.