Bread making requires yeast, flour and water. Why is yeast used?
A. It makes the bread healthier as yeast is a
source of vitamins.
B. It makes the bread rise due to the carbon
dioxide released during ethanol fermentation.
C. It makes the bread rise due to the carbon
dioxide released during cellular respiration.
D. It makes the bread sour due to lactic acid
fermentation.
E. It makes the bread crunchy.
B
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