Explanation:
Option C is correct:
►Yeast or Saccharomyces cerevisiae breaks the carbohydrates (sugars) to form alcohol.
►This process is termed as fermentation.
►Yeast plays a tremendous role in the process of fermentation and hence it is used to produce fermented products like cake, alcohol, etc.
Options A, B, and D are incorrect:
►Nitrogen fixation is the process of fixing nitrogen into the soil that will help for various biochemical reactions and it is performed by some bacteria.
►Moulding is the process of growing moulds on some food products, contaminated by some fungus.
►Infection is commonly caused by various microbes present in or outside the body which can cause various allergic and harmful effects.
Final answer:
Option C is correct, that is,
The process of conversion of sugar into alcohol is termed as fermentation.
