Which of the following is a man-made material?

Options

A. Plastic
B. Synthetic fibres
C. Coir
D. Both (a) and (b)

Explanation

To determine which of the following is a man-made material, let's analyze the options provided:

1. **Plastic**:
- Plastic is a synthetic material, which means it is man-made. It is produced through chemical processes that transform natural resources like petroleum into various types of plastic. Therefore, plastic is indeed a man-made material.

2. **Synthetic Fiber**:
- Synthetic fibers are also man-made materials. These fibers are created through chemical processes and are not derived from natural sources. Examples include nylon, polyester, and acrylic. Hence, synthetic fibers are classified as man-made.

3. **Coir**:
- Coir is a natural fiber obtained from the husk of coconuts. It is not man-made but rather a natural product. Therefore, coir does not qualify as a man-made material.

4. **Natural Fiber**:
- Natural fibers, like cotton, wool, and silk, are derived from plants or animals. They are not produced through human intervention and thus are not man-made.

Based on this analysis, the man-made materials from the options are:

- **Option 1: Plastic**
- **Option 2: Synthetic Fiber**

Thus, the correct answer is that both plastic and synthetic fiber are man-made materials.

### Final Answer:
The man-made materials from the options are **Plastic** and **Synthetic Fiber**.

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