Which of the following is a right protected by the First Amendment?

The First Amendment to the United States Constitution primarily protects fundamental rights related to expression and religion. Among these rights, freedom of speech is a cornerstone of democratic society, allowing individuals to express their thoughts, opinions, and beliefs without government interference. This protection fosters a marketplace of ideas, allowing for healthy discourse and debate.

While the other options relate to important rights, they fall under different amendments. The right to vote is protected by various constitutional amendments, including the Fifteenth and Nineteenth Amendments. The right to bear arms is addressed in the Second Amendment. Similarly, the right to due process is found in the Fifth and Fourteenth Amendments. Therefore, freedom of speech distinctly stands out as a right explicitly safeguarded by the First Amendment, making it the correct choice in this context.