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The mayor of Wahreen is debating whether the installation of new wind turbines, solar panels and large battery farms are the correct choice for his city’s electricity needs. He argues: “Although it is clean and renewable, the wind does not blow 24/7 and therefore cannot be relied on. The same goes with solar panels; the sun only shines during the day and only when it is not overcast.”

Which of these statements, if true, most weakens the above argument?