Which of the following is a natural fibre?

Options

A. Starch
B. Cellulose
C. Rubber
D. Nylon-6

Explanation

To determine which of the following is a natural fiber, we need to analyze the options provided (A, B, C, D) and identify which one is derived from natural sources, specifically from plants or animals.

### Step-by-Step Solution:

1. **Identify the Options**:
- Let's assume the options are:
A) Cotton
B) Nylon
C) Starch
D) Rubber

2. **Understand Natural Fibers**:
- Natural fibers are materials obtained from plants or animals. Common examples include cotton, jute, wool, and silk.

3. **Analyze Each Option**:
- **Option A: Cotton**:
- Cotton is a natural fiber derived from the cotton plant. It is widely used in textiles.
- **Option B: Nylon**:
- Nylon is a synthetic fiber made from petrochemicals. It is not a natural fiber.
- **Option C: Starch**:
- Starch is a carbohydrate, not a fiber. It is derived from plants but is not used as a fiber in textiles.
- **Option D: Rubber**:
- Rubber is derived from the latex of rubber trees and is considered an elastomer, not a traditional fiber.

4. **Conclusion**:
- Among the given options, **Cotton (Option A)** is the only natural fiber.

### Final Answer:
**Cotton is a natural fiber.**

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