Answer :
Final answer:
Yeast in bread dough produces carbon dioxide gas through alcoholic fermentation, causing the dough to rise and create a softer, lighter bread.
Explanation:
Yeast in bread dough uses alcoholic fermentation to produce carbon dioxide gas as a waste product. This gas causes bubbles in the dough, leading to its rise during baking. The carbon dioxide acts as a leavening agent, making the bread softer and lighter.
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