Final answer:
The word 'exercise' in the sentence means to put into practice. By participating in a peaceful protest, individuals actively practice their right to freedom of speech.
Explanation:
Exercise in the sentence 'If you participate in a peaceful protest, you exercise the right to have freedom of speech' primarily means put into practice. By participating in a peaceful protest, individuals are actively exercising or putting into practice their right to freedom of speech through their actions and presence.
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