In which of the following is fats, carbohydrates and proteins digested ?

Options

A. Small intestine
B. Large intestine
C. Stomach
D. Mouth

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks where fats, carbohydrates, and proteins are digested in the human body.

2. **Understand the Options**: The options likely include different parts of the gastrointestinal tract, such as the mouth, stomach, small intestine, and large intestine.

3. **Analyze Each Option**:
- **Mouth**: In the mouth, only carbohydrates begin digestion due to the enzyme amylase present in saliva. Fats and proteins are not digested here.
- **Stomach**: The stomach is primarily responsible for protein digestion due to the enzyme pepsin. However, fats and carbohydrates are not significantly digested here.
- **Large Intestine**: The large intestine mainly absorbs water and processes waste. It does not play a role in the digestion of fats, carbohydrates, or proteins.
- **Small Intestine**: The small intestine is where the majority of digestion occurs. It has enzymes that digest fats (lipase), carbohydrates (amylase, maltase, lactase), and proteins (various proteases).

4. **Conclude the Correct Answer**: Based on the analysis, the small intestine is the correct answer as it is the site where fats, carbohydrates, and proteins are digested.

5. **Final Answer**: The correct answer is the **small intestine**.

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