What Do the Production of Wine, Beer, Yogurt, and Sauerkraut

Multiple Choice

What do the production of wine, beer, yogurt, and sauerkraut all have in common?

A) All of these products are the result of yeast acting on natural sugars in the food starting material.
B) All of these products are made by microbial fermentation of natural sugars in the food starting material.
C) Microorganisms grow in each of these foods producing acids which are responsible for the flavors.
D) All of these choices are correct.