A piece of fabric burns by giving a smell of burning hair. It s made up off :

Options

A. natural silk
B. artificial silk
C. natural silk or wool
D. natural wood

Answer

To determine what type of fabric gives off a smell of burning hair when it burns, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Smell**: The question states that the fabric gives off a smell similar to burning hair. This is an important clue because different fibers produce different smells when burned.

2. **Understand Fiber Types**: There are two main categories of fibers: natural fibers and synthetic fibers. Natural fibers come from plants and animals, while synthetic fibers are man-made.

3. **Analyze Natural Fibers**: Natural fibers include materials like cotton, linen, wool, and silk. Among these, wool and silk are derived from animals.

4. **Consider the Protein Content**: The smell of burning hair is associated with keratin, a protein found in hair. Since wool and silk are also protein-based fibers, they would produce a similar smell when burned.

5. **Eliminate Synthetic Fibers**: Synthetic fibers, like polyester or nylon, do not contain protein and typically produce a different smell, often resembling burning plastic. Therefore, they can be eliminated as options.

6. **Conclusion**: Since the fabric gives off a smell of burning hair, it is most likely made from natural fibers such as wool or silk, both of which contain proteins that burn and produce a similar odor.

### Final Answer:
The piece of fabric is made up of **natural silk or wool fibers**.