One of the ingredients used to make bread is yeast, a type of microorganism. This may seem odd, to use a microorganism as an ingredient, but the yeast serves an important function. In this case, how would you describe this microorganism? A) Yeast is a harmful microorganism that produces gas. B) Yeast is a beneficial microorganism that helps the bread rise. C) Yeast is a beneficial microorganism that keeps the dough clean. D) Yeast is a harmful microorganism that may cause illness in humans.