The most common method of producing _____ is fermentation, a process in which sugar is changed to alcohol by the action of yeast.

Name: The most common method of producing _____ is fermentation, a process in which sugar is changed to alcohol by the action of yeast.
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Question

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The sentence states that the process of fermentation produces alcohol, which is specifically mentioned as 'ethanol' in the options. The other choices - kerogen, butanol, gasoline, and ethylene - have no relation to the given information.

The Most Common Method of Producing _____ Is Fermentation, a Process