The First Amendment guarantees religious freedom, allowing individuals to practice their beliefs without government interference. It does not cover due process of law, the right to a fair trial, or the right to bear arms, which fall under different amendments. Therefore, the correct answer is B: religious freedom.
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The First Amendment guarantees religious freedom among other rights but does not include due process, the right to a fair trial, or the right to bear arms. Religious freedom allows individuals to practice their beliefs without government interference. Therefore, the correct answer is related to the protection of religious practices. ;