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Most neighborhood streets are illuminated at night by streetlights. The streetlights are ________ and ________. Therefore, they are likely to be ________ by the competitive market.

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Answer: The correct answer is : nonrival; nonexcludable; underprovided

Explanation: There are high sources of light on the side of a road or road, it can be: a lamppost, lamppost, street lamp, standard light, standard lamp. Many lamps are light sensitive and are activated automatically.

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