Which of the following is a traditional human use of microorganisms? Select one: a. Baking bread b. Treating water and sewage c. Mass-producing antibiotics d. Cleaning up oil spills

Baking bread

Explanation:

Over time, microorganisms have been found beneficial in nature. most significantly in the fermentation process of bread baking.  the main micro organism in bread making traditionally is the yeast. Yeast is a microbe, when the yeast feeds on sugar it ferments it and it converts the sugar into carbon dioxide and ethanol. The function of the yeast in bread making is that it causes bread to rise.