Which of the following rights is protected by the Bill of Rights?

The right to bear arms is explicitly protected by the Second Amendment of the U.S. Constitution, which is part of the Bill of Rights. This amendment states that the right of the people to keep and bear Arms shall not be infringed, highlighting the importance placed on the ability of individuals to possess weapons for defense and other lawful purposes.

Voting rights, while significant, are primarily addressed through various amendments and legislation, but not specifically in the Bill of Rights. The right to free education is not guaranteed by the Constitution and is instead determined at the state level. The right to privacy is inferred from various amendments, particularly the Fourth Amendment and others, but is not explicitly stated in the Bill of Rights itself. Thus, the correct answer is rooted in a direct and explicit constitutional provision.