Difficulty: Easy
Correct Answer: Chinese alchemists in 9th-century China
Explanation:
Given data
Concept / ApproachHistorical sources attribute the invention of gunpowder to Chinese alchemists during the Tang period, with recipes recorded in early military and alchemical texts.
Why the others are incorrectRoger Bacon described gunpowder later; Arab scholars transmitted and improved knowledge subsequently; Alfred Nobel invented dynamite, not gunpowder.
Final AnswerChinese alchemists in 9th-century China.
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