Probiotics are

Options

A. New kind of food allergens
B. Safe antibiotics
C. Live microbial food supplement
D. Cancer inducing microbes

Answer

**Step-by-Step Solution:**

1. **Understanding Probiotics**: Probiotics are defined as live microorganisms that provide health benefits when consumed in adequate amounts. They are often referred to as "good" or "friendly" bacteria.

2. **Identifying Health Benefits**: Probiotics are known to improve gastrointestinal health, boost the immune system, relieve constipation, and reduce discomfort in the gastrointestinal tract. These benefits highlight their role in maintaining a healthy digestive system.

3. **Historical Context**: The first probiotic discovered was Lactobacillus bulgaricus, which was found in Bulgarian yogurt. This historical context helps to understand the origins of probiotics.

4. **Common Types of Probiotics**: The most common types of probiotics belong to the genera Lactobacillus and Bifidobacterium. These strains are widely used in various fermented foods.

5. **Sources of Probiotics**: Probiotics can be found in fermented dairy products, such as yogurt, as well as in other fermented foods like bread and certain baked goods.

6. **Evaluating the Options**:
- **Option A**: New kind of food allergens - This is incorrect as probiotics are beneficial and not allergens.
- **Option B**: Safe antibiotics - This is also incorrect; antibiotics are not live organisms but chemical compounds that kill bacteria.
- **Option C**: Live microbial food supplement - This is correct as it accurately describes probiotics.
- **Option D**: Cancer reducing microbes - This is incorrect; probiotics are not classified as carcinogens.

7. **Conclusion**: The correct answer is **Option C: Live microbial food supplement**.

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