Taru wanted to test the quality of fabric of her muffler. She pulled a small strand of yarn from the muffler and burned it. It smelled like a burning hair. She inferred that the muffler is made up of

Options

A. cotton
B. silk
C. wool
D. polyester

Explanation

To determine the quality of the fabric of Taru's muffler, we can follow these steps:

### Step-by-Step Solution:

1. **Observation of the Yarn**: Taru pulled a small strand of yarn from the muffler. This is the first step where she prepares to test the fabric.

2. **Burning the Yarn**: She then burned the strand of yarn. This is a common method to test the type of fiber in a fabric.

3. **Smell Analysis**: As the yarn burned, it emitted a smell similar to burning hair. This is a crucial observation because different fibers have distinct burning characteristics and smells.

4. **Identifying the Fiber**:
- **Cotton**: When burned, cotton smells like burning paper.
- **Silk**: Burning silk gives off a smell similar to burning meat.
- **Polyester**: This synthetic fiber smells like burning plastic.
- **Wool**: Burning wool has a smell akin to burning hair.

5. **Conclusion**: Since the smell of the burning yarn was like burning hair, Taru can infer that the muffler is made of wool.

### Final Answer:
Taru inferred that the muffler is made up of **wool**.

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