Caring for the environment will be one of the most important features of my perfect society. Citizens will be encouraged to reduce waste in many ways. ________, restaurants will offer cloth napkins and reusable utensils instead of paper and plastic.

The sentence gives a specific way citizens can reduce waste: restaurants will use cloth napkins and reusable utensils. “For example” introduces a specific instance of the broader idea, so the best choice is “For example.”

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