Q. The bread becomes soft and porous when the yeast cells are mixed in the lump of dough of wheat flour, because
A. Yeast is soft and flour also becomes soft
B. Yeast produces acetic acid and alcohol which gives softness to the bread
C. Evolution of CO2 makes the bread spongy
D. Yeast produces benzoic acid
Answer: Evolution of CO2 makes the bread spongy
