What process combines yeast with sugars to produce alcohol?

The process that combines yeast with sugars to produce alcohol is fermentation. This biological process occurs when yeast metabolizes sugars, converting them into ethanol (alcohol) and carbon dioxide. Fermentation is essential in brewing and winemaking, where it transforms simple sugars from fruits or grains into alcoholic beverages. During fermentation, yeast acts on the sugars in the absence of oxygen, which distinguishes this process from oxidation, where substances are chemically transformed due to the interaction with oxygen.

Condensation and evaporation involve physical changes in matter, such as the transformation of liquids to gases or vice versa, without the creation of new substances like alcohol. Therefore, fermentation is the only process among the options that specifically results in the production of alcohol through the action of yeast on sugar.