Which causes fermentation?
a. antibodies
b. antigens
c. microorganisms
d. antibiotics

I believe the answers is c. microorganisms. Fermentation is the process in which starch is converted into the required energy substances such as acid, gas, or alcohol. Microorganisms such as bacteria are the once responsible for this metabolic process in cells.

The correct answer is option C. Microorganisms cause fermentation.The fungi, bacteriata, yeast and other such micro-organaisms cause fermentation, Fermentation is a biological process. These micro-organisms usually cannot be seen by naked eye, but they convert sugars/glucose into acids and gases.

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