A passage describes the 'chilling effect' in free speech law: 'Laws that are vague or overbroad may deter people from engaging in protected speech because they cannot be certain whether their expression will violate the law.' What is the core concern this concept expresses?
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A
Vague laws are unconstitutional because they violate due process regardless of their effect on speech.
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B
Legal uncertainty itself suppresses constitutionally protected expression even without prosecution.
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C
People who engage in protected speech should receive explicit government approval in advance.
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D
Courts are too slow to clarify the boundaries of free speech laws for ordinary citizens.