The earliest known balloons were made from which material?
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Papyrus
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Rubber
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Animal bladders
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Gum resin
C
Correct answer
Explanation
The correct answer is C (Animal bladders). Before rubber and latex, early balloons were made from animal bladders (often pig or other animals), cleaned and inflated. This dates back centuries. Neither papyrus, rubber, nor gum resin were the earliest materials used for balloons.