The world's tallest structure?
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WTC
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Burj Khalifa in Dubai
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Eiffel Tower
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Two Towers at Singapore
B
Correct answer
Explanation
Burj Khalifa in Dubai is the world's tallest structure, standing 828 meters (2,717 feet) tall. It has held this record since 2010. The Eiffel Tower is 324m, World Trade Center (One WTC) is 541m, and Singapore's twin towers (Marina Bay Sands hotel towers) are approximately 200m each.