Many yogurt containers have a seal that says contain live cultures. this means that there are live bacteria in the yogurt which can function as probiotics. which sentence best describes the purpose of these probiotic bacteria? a-the bacteria are beneficial because they give the yogurt it’s fruit flavors b-the bacteria are beneficial because they provide an additional source of protein in the yogurt. c-the bacteria are beneficial because they act as a preservative to extend the shelf life of the yogurt d-the bacteria are beneficial because they can improve the balance of good bacteria in a persons intestines.