Question

because of stress at work, linda’s stomach has been acting up. she saw a commercial for a yogurt with added probiotics that claims to aid with digestion and alleviate bowel problems. what is a probiotic? multiple choice a probiotic contains nutrient - dense bacteria that eat other bad bacteria in the stomach a probiotic is a dietary supplement that increases fat metabolism, which in turn improves digestive health. a probiotic is a substance that stimulates bacterial growth in the large intestine. a probiotic contains specific types of bacteria that are intended to colonize the large intestine and thereby improve intestinal tract health.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: Probiotics don't "eat" bad bacteria; this is an incorrect description.
• Option 2: Probiotics are not about fat metabolism; they relate to gut bacteria, so this is wrong.
• Option 3: Probiotics are live bacteria (or yeasts), not just substances that stimulate growth (that's prebiotics). So this is incorrect.
• Option 4: Probiotics contain beneficial bacteria intended to colonize the gut (like the large intestine) to improve intestinal health, which matches the scientific definition.

Answer:

D. A probiotic contains specific types of bacteria that are intended to colonize the large intestine and thereby improve intestinal tract health. (Note: Assuming the last option is D; if the options were labeled differently, adjust the label, but the text of the option is as above.)