Question

how can fermentation aid food preservation?
multiple choice
the process makes the ph more neutral, which prevents microbes from growing.
the process acidifies the ph, which prevents microbes from growing.
the process makes the ph more basic, which prevents microbes from growing.

Explanation:

Fermentation involves the action of microorganisms. During fermentation, organic compounds (like sugars) are broken down. In many cases, acids (such as lactic acid in lactic - acid fermentation) are produced. Acids lower the pH of the food (acidify it). Most spoilage - causing and pathogenic microbes have a limited pH range in which they can grow. A low (acidic) pH is unfavorable for the growth of many microbes as it can damage their cell membranes, disrupt enzyme functions, and affect other cellular processes.

Answer:

The process acidifies the pH, which prevents microbes from growing.